NIR Superluminescent Diodes (SLDs)


  • Broadband Emission Wavelengths from 770 nm to 1550 nm
  • Low Ripple
  • Butterfly Package

SLD1325

1325 nm SLD, >100 nm Bandwidth

Application Idea

SLD1550S-A2
Superluminescent Diode
Mounted in a CLD1015 Compact
Laser Diode Driver with TEC

Related Items


Please Wait
Recommended Controller / Mount Options
Item # Mount Diode Driver TEC Controller
CLD1015 Yes! Yes! Yes!
LM14S2 Yes!  -  -
ITC4000 Series Use with LM14S2 Mount Yes! Yes!
LDC200 Series Use with LM14S2 Mount Yes!
TED200C Use with LM14S2 Mount  - Yes!
Click to Enlarge
Comparison graph showing the optical spectra for all NIR superluminescent diodes (SLDs). For more spectra comparison graphs, see the Spectral Comparison tab.

Features

  • Center Wavelengths from 770 nm to 1550 nm
  • Typical 3 dB Bandwidths Ranging from 18 to 110 nm
  • 14-Pin Butterfly Package Pigtailed with ≥1 m of SM or PM Fiber
  • 2.0 mm Narrow Key FC/APC Connector
  • Integrated TEC and Thermistor

Superluminescent Diodes (SLDs) are excellent high-power, broadband light sources that are ideal for use in applications such as Optical Coherence Tomography (OCT) Imaging Systems and Fiber Optic Gyroscopes (FOG). The butterfly-packaged SLDs offered here up to 1100 nm are gallium arsenide (GaAs) substrate based and the rest are indium phosphide (InP) devices.

Each device is built into a 14-pin butterfly package with an integrated thermoelectric cooler (TEC) and thermistor to ensure output stability. The output is coupled into an SM or PM fiber terminated with a 2.0 mm narrow key FC/APC connector. Please note that optical feedback can diminish the output power or damage the SLD. We do not recommend using these SLDs with components that are prone to back reflections, such as FC/PC connectors. The SLD1325 1325 nm superluminescent diode incorporates an integrated isolator. If you are interested in an SLD at a different wavelength with an integrated isolator, please contact Tech Support with inquiries.

Each SLD is shipped with an individualized product data sheet, which includes information on the spectrum and operating parameters of the device. Test data for a specific SLD can be requested by contacting Tech Support.

The SLDs featured on this page have either a near-Gaussian or flat-top optical spectrum. The calculation for the center wavelength differs with these two spectral shapes. Please see the Specs tab for center wavelength calculations.

Thorlabs is able to provide low-ripple SLDs with custom wavelengths or higher power diodes. Please note that the engineering design and wafer manufacturing costs involved make the purchase of low quantities very costly. For a quote on custom SLDs, please contact Tech Support. A selection of the SLDs sold here are also available as benchtop sources. For more information, see the Selection Guide tab.

Due to the nature of producing superluminescent diodes with ultra wide bandwidths, some of the SLDs sold below have spectral shapes that are near gaussian, while others have a shape with a flattened top. This difference in spectral shape demands two different methods of defining center wavelength in order to provide an accurate description of the diode.

Near-Guassian Center Wavelength Definition
The center wavelength for devices with a near-gaussian spectral shape is defined by an average weighted by the relative amplitude and may not correspond to peak power or the FWHM center wavelength due to the variability of the spectrum shape. For a given Optical Spectrum Analyzer (OSA) trace:

Weighted Average

where

  • CW is the Specified Center Wavelength
  • Xi is the Wavelength of a Trace Data Point
  • Yi is the Amplitude of a Trace Data Point

Flat-Top Center Wavelength Definition
The center wavelength for devices with a flat-top spectral shape is defined by the midpoint between the two wavelengths located at 3 dB below the maximum intensity point on the spectrum. For a given OSA trace:

Weighted Average

where

  • CW is the Specified Center Wavelength
  • XR_3dB is the Right Wavelength Edge of the 3 dB Bandwidth
  • XL_3dB is the Left Wavelength Edge of the 3 dB Bandwidth

 

SLD Specifications

Note that these specifications are given as guidelines. The characterization sheet shipped with each SLD provides the minimum, maximum, and recommended operating parameters and specifications specific to that device. The ASE Power specification is the output from the fiber pigtail.

770 nm Superluminescent Diode

Item # SLD770S
Parametera Min Typ. Max
Operating Current - - 170 mA
Center Wavelengthb 760 nm 770 nm 780 nm
Spectral Shape Near Gaussian
ASE Powerc 4.5 mW 5.5 mW -
Optical 3 dB Bandwidthc,d 15 nm 18 nm -
RMS Gain Ripplec - 0.01 dB 0.3 dB
Forward Voltagec - 1.95 V 2.5 V
Fiber Type 780HP (SM)
TEC Operation: Typ. / Max @ TCASE = 25 °C / 70 °C
TEC Current - 0.11 A 1.4 A
TEC Voltage - 0.16 V 4.0 V
Thermistor Resistance - 10 kΩ -
Performance Graphs (Click Icons for Plots)
Output Spectrum
LIV Plot
Gain Ripplec,e
Absolute Maximum Ratingsa
Absolute Max Current 170 mA
Operating Case Temperature 0 to 70 °C
Storage Temperature -10 to 70 °C
Pin Code 14 Pin, Type 1
  • These Operating Specifications are a consistent set of values which will yield the specified performance. Please note that exceeding the Absolute Maximum Ratings in the table may cause device failure.
  • The center wavelength for an SLD with a near-Gaussian spectral shape is defined by an average weighted by relative amplitude and may not correspond to the peak power or FWHM center wavelength. See the definitions above for details.
  • At Operating Current
  • At the minimum ASE power, the minimum 3 dB bandwidth is guaranteed.
  • Measurement Resolution = 0.02 nm

810 nm Superluminescent Diodes

Item # SLD810S
Parametera Min Typical Max
Operating Current - - 270 mA
Center Wavelengthb 795 nm 810 nm 825 nm
Spectral Shape Near Gaussian
ASE Powerc 13 mW 15 mW -
Optical 3 dB Bandwidthc,d 25 nm 30 nm -
RMS Gain Ripplec - 0.03 dB 0.15 dB
Forward Voltage - 2.1 V 2.5 V
Fiber 780HP (SM)
TEC Operation: Typ. / Max @ TCASE = 25 °C / 70 °C
TEC Current - 0.2 A 1.4 A
TEC Voltage - 0.3 V 6.0 V
Thermistor Resistance - 10 kΩ -
Performance Graphs (Click Icons for Plots)
Output Spectrum Optical Spectrum
LIV Plot LIV Curves
Gain Ripplec,e
Absolute Maximum Ratingsa
Absolute Max Current 290 mA
Operating Case Temperature 0 to 70 °C
Storage Temperature -10 to 70 °C
Pin Code 14 Pin, Type 1
  • These Operating Specifications are a consistent set of values which will yield the specified performance. Please note that exceeding the Absolute Maximum Ratings in the table may cause device failure.
  • The center wavelength for an SLD with a near-Gaussian spectral shape is defined by an average weighted by relative amplitude and may not correspond to the peak power or FWHM center wavelength. See the definitions above for details.
  • At Operating Current
  • At the minimum ASE power, the minimum 3 dB bandwidth is guaranteed.
  • Measurement Resolution = 0.02 nm

830 nm Superluminescent Diodes

Item # SLD830S-A10W SLD830S-A20W SLD830S-A10 SLD830S-A20
Parametera Min Typical Max Min Typical Max Min Typical Max Min Typical Max
Operating Current - - 240 mA - - 330 mA - - 150 mA - - 240 mA
Center Wavelengthb 815 nm 830 nm 845 nm 815 nm 830 nm 845 nm 820 nm 830 nm 840 nm 820 nm 830 nm 840 nm
Spectral Shape Flat Top Flat Top Near Gaussian Near Gaussian
ASE Powerc,d 10 mW - - 20 mW - - 10 mW 13 mW - 20 mW 22 mW -
Optical 3 dB Bandwidthc,e 50 nm 60 nm - 40 nm 55 nm - 17 nm 20 nm - 17 nm 20 nm -
Optical 20 dB Bandwidthc - - - - - - - 50 nm - - 50 nm -
RMS Gain Ripplec,f - 0.06 dB 0.3 dB - 0.03 dB 0.3 dB - 0.03 dB 0.15 dB - 0.03 dB 0.15 dB
Forward Voltage - 2.0 V 2.5 V - 2.0 V 2.5 V - 2.0 V 2.5 V - 2.0 V 2.5 V
Fiber Type 780HP 780HP 780HP 780HP
TEC Operation: Typ. / Max @ TCASE = 25 °C / 70 °C
TEC Current - 0.14 A 1.4 A - 0.14 A 1.4 A - 0.1 A 1.5 A - 0.1 A 1.5 A
TEC Voltage - 0.18 V 6.0 V - 0.18 V 6.0 V - 0.13 V 4.0 V - 0.13 V 4.0 V
Thermistor Resistance - 10 kΩ - - 10 kΩ - - 10 kΩ - - 10 kΩ -
Performance Graphs (Click Icons for Plots)
Output Spectrum Optical Spectrum Optical Spectrum
LIV Plot LIV Curves LIV Curves
Gain Ripplef
Absolute Maximum Ratingsa
Absolute Max Current 240 mA 330 mA 150 mA 240 mA
Operating Case Temperature 0 to 70 °C
Storage Temperature -10 to 70°C
Pin Code 14 Pin, Type 1
  • These Operating Specifications are a consistent set of values which will yield the specified performance. Please note that exceeding the Absolute Maximum Ratings in the table may cause device failure.
  • The center wavelength for an SLD with a flat-top spectral shape is defined as the midpoint of the 3 dB bandwidth; for an SLD with a near-gaussian spectral shape, the center wavelength is defined by an average weighted by relative amplitude and may not correspond to the peak power or FWHM center wavelength. See the definitions above for details.
  • At Operating Current
  • Corresponds to the output of the fiber pigtail.
  • For the SLD830S-A10W and SLD830S-A20W: At the minimum ASE power, the minimum 3 dB bandwidth is guaranteed.
  • Measurement Resolution = 0.02 nm

850 nm Superluminescent Diodes

Item # SLD850S-A10W SLD850S-A20W
Parametera Min Typical Max Min Typical Max
Operating Current - - 180 mA - - 340 mA
Center Wavelengthb 835 nm 850 nm 865 nm 835 nm 850 nm 865 nm
Spectral Shape Flat Top Flat Top
ASE Powerc,d 10 mW - - 20 mW - -
Optical 3 dB Bandwidthc,e 40 nm 60 nm - 40 nm 55 nm -
RMS Gain Ripplec,f - 0.03 dB 0.3 dB - 0.03 dB 0.3 dB
Forward Voltage - 2.0 V 2.5 V - 2.0 V 2.5 V
Fiber Type 780HP 780HP
TEC Operation: Typ. / Max @ TCASE = 25 °C / 70 °C
TEC Current - 0.11 A 1.4 A - 0.18 A 1.4 A
TEC Voltage - 0.17 V 6.0 V - 0.27 V 6.0 V
Thermistor Resistance - 10 kΩ - - 10 kΩ -
Performance Graphs (Click Icons for Plots)
Output Spectrum
LIV Plot
Gain Ripplef
Absolute Maximum Ratingsa
Absolute Max Current 180 mA 340 mA
Operating Case Temperature 0 to 70 °C
Storage Temperature -10 to 70°C
Pin Code 14 Pin, Type 1
  • These Operating Specifications are a consistent set of values which will yield the specified performance. Please note that exceeding the Absolute Maximum Ratings in the table may cause device failure.
  • Defined as the midpoint of the 3 dB bandwidth. See the definitions above for details.
  • At Operating Current
  • Corresponds to the output of the fiber pigtail.
  • At the minimum ASE power, the minimum 3 dB bandwidth is guaranteed.
  • Measurement Resolution = 0.02 nm

880 nm Superluminescent Diodes

Item # SLD880S-A7 SLD880S-A25
Parametera Min Typical Max Min Typical Max
Operating Current - - 225 mA - - 410 mA
Center Wavelengthb 860 nm 880 nm 900 nm 860 nm 880 nm 900 nm
Spectral Shape Flat Top Flat Top
ASE Powerc,d 6 mW 7 mW - 23 mW 25 mW -
Optical 3 dB Bandwidthc 35 nm 40 nm - 35 nm 40 nm -
Optical 20 dB Bandwidthc - 80 nm - - 80 nm -
RMS Gain Ripplec,e - 0.06 dB 0.3 dB - 0.06 dB 0.3 dB
Forward Voltagec - 2.0 V 2.5 V - 2.0 V 2.5 V
Fiber Type 780HP 780HP
TEC Operation: Typ. / Max @ TCASE = 25 °C / 70 °C
TEC Current - 0.2 A 1.4 A - 0.2 A 1.4 A
TEC Voltage - 0.8 V 6.0 V - 0.8 V 6.0 V
Thermistor Resistance - 10 kΩ - - 10 kΩ -
Performance Graphs (Click Icons for Plots)
Output Spectrum Optical Spectrum Optical Spectrum
LIV Plot LIV Curves LIV Curves
Gain Ripplee
Absolute Maximum Ratingsa
Absolute Max Current 225 mA 410 mA
Operating Case Temperature 0 to 70 °C
Storage Temperature -10 to 70°C
Pin Code 14 Pin, Type 1
  • These Operating Specifications are a consistent set of values which will yield the specified performance. Please note that exceeding the Absolute Maximum Ratings in the table may cause device failure.
  • Defined as the midpoint of the 3 dB bandwidth. See the definitions above for details.
  • Specification given at operating current. At the minimum ASE power, the minimum 3 dB bandwidth is guaranteed.
  • Corresponds to the output of the fiber pigtail.
  • Measurement Resolution = 0.02 nm

920 nm Superluminescent Diodes

Item # SLD920x
Parametera Min Typical Max
Operating Current - - 420 mA
Center Wavelengthb 895 nm 920 nm 945 nm
Spectral Shape Flat Top
ASE Powerc,d 10 mW 15 mW -
Optical 3 dB Bandwidthc,e 50 nm 65 nm -
RMS Gain Ripplec,f - 0.02 dB 0.3 dB
Forward Voltage - 2.0 V 2.5 V
Fiber 780HP (SM)
PM780-HP (PM)g
TEC Operation: Typ. / Max @ TCASE = 25 °C / 70 °C
TEC Current - 0.3 A 1.4 A
TEC Voltage - 0.4 V 6.0 V
Thermistor Resistance - 10 kΩ -
Performance Graphs (Click Icons for Plots)
Output Spectrum Optical Spectrum
LIV Plot LIV Curves
Gain Ripplee
Absolute Maximum Ratingsa
Absolute Max Current 420 mA
Operating Case Temperature 0 °C to 70 °C
Storage Temperature -10 °C to 70 °C
Pin Code 14 Pin, Type 1
  • These Operating Specifications are a consistent set of values which will yield the specified performance. Please note that exceeding the Absolute Maximum Ratings in the table may cause device failure.
  • Defined as the midpoint of the 3 dB bandwidth. See the definitions above for details..
  • At Operating Current
  • Corresponds to the output of the fiber pigtail.
  • At the minimum ASE power, the minimum 3 dB bandwidth is guaranteed.
  • Measurement Resolution = 0.02 nm
  • The connector key is aligned to the slow axis of the PM fiber.

930 nm Superluminescent Diodes

Item # SLD930x-A40W
Parametera Min Typical Max
Operating Current - - 800 mA
Center Wavelengthb 915 nm 930 nm 945 nm
Spectral Shape Flat Top
ASE Powerc,d 36 mW 40 mW -
Optical 3 dB Bandwidthc,e 40 nm 45 nm -
RMS Gain Ripplec,f - 0.06 dB 0.3 dB
Forward Voltage - 2.0 V 2.5 V
Fiber 780HP (SM)
PM780-HP (PM)g
TEC Operation: Typ. / Max @ TCASE = 25 °C / 70 °C
TEC Current - 0.54 A 1.4 A
TEC Voltage - 0.78 V 6.0 V
Thermistor Resistance - 10 kΩ -
Performance Graphs (Click Icons for Plots)
Output Spectrum
Optical Spectrum
SM
Optical Spectrum
PM
LIV Plot
LIV Curves
SM
LIV Curves
PM
Gain Ripplef

SM

PM
Absolute Maximum Ratingsa
Absolute Max Current 800 mA
Operating Case Temperature 0 °C to 70 °C
Storage Temperature -10 °C to 70 °C
Pin Code 14 Pin, Type 1
  • These Operating Specifications are a consistent set of values which will yield the specified performance. Please note that exceeding the Absolute Maximum Ratings in the table may cause device failure.
  • Defined as the midpoint of the 3 dB bandwidth. See the definitions above for details..
  • At Operating Current
  • Corresponds to the output of the fiber pigtail.
  • At the minimum ASE power, the minimum 3 dB bandwidth is guaranteed.
  • Measurement Resolution = 0.02 nm
  • The connector key is aligned to the slow axis of the PM fiber.

970 nm Superluminescent Diodes

Item # SLD970x-A40W
Parametera Min Typical Max
Operating Current - 1000 mA 1010 mA
Center Wavelengthb 945 nm 970 nm 995 nm
Spectral Shape Flat Top
ASE Powerc,d 35 mW 40 mW -
Optical 3 dB Bandwidthc,e 40 nm 50 nm -
RMS Gain Ripplec,f - 0.03 dB 0.2 dB
Forward Voltage - 1.2 V 2.5 V
Fiber Type HI1060 (SM)
PM980-XP (PM)g
TEC Operation: Typ. / Max @ TCASE = 25 °C / 70 °C
TEC Current - 0.83 A 1.4 A
TEC Voltage - 0.12 V 6.0 V
Thermistor Resistance - 10 kΩ -
Performance Graphs (Click Icons for Plots)
Output Spectrum
LIV Plot
Gain Ripplef
Absolute Maximum Ratingsa
Absolute Max Current 1010 mA
Operating Case Temperature 0 °C to 70 °C
Storage Temperature -10 °C to 70 °C
Pin Code 14 Pin, Type 1
  • These Operating Specifications are a consistent set of values which will yield the specified performance. Please note that exceeding the Absolute Maximum Ratings in the table may cause device failure.
  • Defined as the midpoint of the 3 dB bandwidth. See the definitions above for details.
  • At Operating Current
  • Corresponds to the output of the fiber pigtail.
  • At the minimum ASE power, the minimum 3 dB bandwidth is guaranteed.
  • Measurement Resolution = 0.02 nm
  • The connector key is aligned to the slow axis of the PM fiber.

1050 nm Superluminescent Diodes

Item # SLD1050x SLD1050S-A60 SLD1050P-A60
Parametera Min Typical Max Min Typical Max Min Typical Max
Operating Current - - 300 mA - - 1010 mA - - 1010 mA
Center Wavelengthb 1030 nm 1050 nm 1070 nm 1025 nm 1050 nm 1075 nm 1025 nm 1050 nm 1075 nm
Spectral Shape Near Gaussian Flat Top Flat Top
ASE Powerc,d 6 mW 8 mW - 55 mW 60 mW - 55 mW 60 mW -
Optical 3 dB Bandwidthc,e 40 nm 50 nm - 60 nm 70 nm - 60 nm 70 nm -
Optical 20 dB Bandwidthc - - - - 100 nm - - - -
RMS Gain Ripplec,f - 0.1 dB 0.25 dB - 0.03 dB 0.2 dB - 0.06 dB 0.3 dB
Forward Voltagec - 2.0 V 2.5 V - 2.0 V 2.5 V - 1.9 V 2.5 V
Fiber Type HI1060 (SM)
PM980-XP (PM)g
HI1060 PM980-XPg
TEC Operation: Typ. / Max @ TCASE = 25 °C / 70 °C
TEC Current - 0.25 A 1.5 A - 0.7 A 2.5 A - 0.7 A 2.5 A
TEC Voltage - 0.30 V 4.0 V - 0.9 V 3.2 V - 1.0 V 3.2 V
Thermistor Resistance - 10 kΩ - - 10 kΩ - - 10 kΩ -
Performance Graphs (Click Icons for Plots)
Output Spectrum
Optical Spectrum
SM
Optical Spectrum
PM
Optical Spectrum Optical Spectrum
LIV Plot
LIV Curves
SM
LIV
PM
LIV LIV
Gain Ripplef -
Absolute Maximum Ratingsa
Absolute Max Current 360 mA 1010 mA 1010 mA
Operating Case Temperature 0 °C to 70 °C
Storage Temperature - -10 °C to 70 °C
Chip Temperature (TEC) 10 °C to 30 °C -
Pin Code 14 Pin, Type 1
  • These Operating Specifications are a consistent set of values which will yield the specified performance. Please note that exceeding the Absolute Maximum Ratings in the table may cause device failure.
  • For an SLD with a near-gaussian spectral shape, the center wavelength is defined by an average weighted by relative amplitude and may not correspond to the peak power or FWHM center wavelength; the center wavelength for an SLD with a flat-top spectral shape is defined as the midpoint of the 3 dB bandwidth. See the definitions above for details.
  • Specification given at the operating current. For the SLD1050S-A60: At the minimum ASE power, we guarantee the minimum 3 dB bandwidth.
  • Corresponds to the output of the fiber pigtail.
  • For the SLD1050P-A60: At the minimum ASE power, we guarantee the minimum 3 dB bandwidth.
  • Measurement Resolution = 0.02 nm
  • The connector key is aligned to the slow axis of the PM fiber.

1310 nm Superluminescent Diodes

Item # SLD1021S SLD1018x
Parametera Min Typical Max Min Typical Max
Operating Current - 700 mA 900 mA - 600 mA 800 mA
Center Wavelengthb 1290 nm - 1330 nm 1290 nm - 1330 nm
Spectral Shape Near Gaussian Near Gaussian
ASE Powerc,d 10 mW 12.5 mW - 22 mW 30 mW -
Optical 3 dB Bandwidthc 80 nm 85 nm - 40 nm 45 nm -
RMS Gain Ripplec,e - - 0.35 dB - 0.1 dB 0.35 dB
Forward Voltagec - 1.55 V 2.0 V - 1.5 V 1.8 V
Fiber Type SMF-28e+ SMF-28e+ (SM)
Corning PM 13-U40A (PM)f
TEC Operation: Typ. / Max @ TCASE = 25 °C / 65 °C
TEC Current - 0.4 A 1.5 A - 0.4 A 1.5 A
TEC Voltage - 0.5 V 4 V - 0.5 V 4 V
Thermistor Resistance - 10 kΩ - - 10 kΩ -
Performance Plots (Click Icons for Plots)
Output Spectrum Optical Spectrum Optical Spectrum
LIV Plot LIV Curves LIV Curves
  • These Operating Specifications are a consistent set of values which will yield the specified performance. Exceeding the maximum operating parameters in the table may cause device failure.
  • The center wavelength is defined by an average weighted by relative amplitude and may not correspond to the peak power or FWHM center wavelength. See the definitions above for details.
  • At Operating Current
  • Corresponds to the output of the fiber pigtail.
  • Measurement Resolution = 0.1 nm
  • The connector key is aligned to the slow axis of the PM fiber.

1325 nm Superluminescent Diode

Item # SLD1325
Parametera Min Typical Max
Operating Current - - 780 mA
Center Wavelengthb - 1325 nm -
Spectral Shape Flat Top
ASE Powerc 10 mW - -
Optical 3 dB Bandwidth 100 nm - -
RMS Gain Ripple - - -
Forward Voltage - - 4 V
Fiber Type SMF-28e
Operating Temperature Range 0 to 40 °C
TEC Operation
TEC Current - - 4 A
TEC Voltage - - 4 V
Thermistor Resistanced - - 10 kΩ
Integrated Isolator
Isolation 30 dB - -
Performance Plots (Click Icons for Plots)
Output Spectrum
LIV Plot
  • These Operating Specifications are a consistent set of values which will yield the specified performance. Exceeding the maximum operating parameters in the table may cause device failure.
  • Defined as the midpoint of the 3 dB bandwidth. See the definitions above for details.
  • Corresponds to the output of the fiber pigtail at the operating current.
  • Steinhart - Hart Coefficients: C1 = 1.1291x10-3,
    C2 = 2.3413x10-4, and C3 = 0.8767x10-7

1450 nm Superluminescent Diodes

Item # SLD1450x
Parametera Min Typical Max
Operating Current - 500 mA 600 mA
Center Wavelengthb 1435 nm 1450 nm 1465 nm
Spectral Shape Near Gaussian
ASE Powerc,d 23 mW 25 mW -
Optical 3 dB Bandwidthc,e 50 nm 54 nm -
RMS Gain Ripplec,f - 0.06 dB 0.35 dB
Forward Voltage - 1.7 V 2.0 V
Fiber SMF-28e (SM)
Corning® PM15-U40A (PM)g
TEC Operation: Typ. / Max @ TCASE = 25 °C / 70 °C
TEC Current - 0.3 A 1.5 A
TEC Voltage - 0.4 V 4.0 V
Thermistor Resistance - 10 kΩ -
Performance Graphs (Click Icons for Plots)
Output Spectrum
Optical Spectrum
SM
Optical Spectrum
PM
LIV Plot
LIV Curves
SM
LIV Curves
PM
Gain Ripplef

SM

PM
Absolute Maximum Ratingsa
Absolute Max Current 600 mA
Operating Case Temperature 0 °C to 70 °C
Storage Temperature -10 °C to 70 °C
Pin Code 14 Pin, Type 1
  • These Operating Specifications are a consistent set of values which will yield the specified performance. Please note that exceeding the Absolute Maximum Ratings in the table may cause device failure.
  • The center wavelength is defined by an average weighted by relative amplitude and may not correspond to the peak power or FWHM center wavelength. See the definitions above for details.
  • At Operating Current
  • Corresponds to the output of the fiber pigtail.
  • At the minimum ASE power, the minimum 3 dB bandwidth is guaranteed.
  • Measurement Resolution = 0.1 nm
  • The connector key is aligned to the slow axis of the PM fiber.

1550 nm Superluminescent Diodes

Item # SLD1550x-A1 SLD1550x-A2 SLD1005S SLD1550x-A40
Parametera Min Typical Max Min Typical Max Min Typical Max Min Typical Max
Operating Current - 450 mA 500 mA - 550 mA 600 mA - 600 mA 800 mA - 750 mA 900 mA
Center Wavelengthb 1520 nm 1550 nm 1580 nm 1520 nm 1550 nm 1580 nm 1530 nm 1550 nm 1570 nm 1530 nm 1550 nm 1570 nm
Spectral Shape Near Gaussian Near Gaussian Near Gaussian Near Gaussian
ASE Powerc,d 0.75 mW 1.0 mW - 2.0 mW 2.5 mW - 20 mW 22 mW - 35 mW 40 mW -
Optical 3 dB Bandwidthc 100 nm 110 nm - 85 nm 90 nm - 45 nm 50 nm - 30 nm 33 nm -
RMS Gain Ripplec,e - - 0.1 dB - - 0.25 dB - 0.2 dB 0.35 dB - 0.2 dB 0.35 dB
Forward Voltagec - 1.6 V 2.0 V - 1.6 V 2.0 V - 1.4 V 1.8 V - 1.4 V 1.8 V
Fiber Type SMF-28e+ (SM)
Corning PM 15-U40A (PM)f
SMF-28e+ (SM)
Corning PM 15-U40A (PM)f
SMF-28e+ SMF-28e+ (SM)
Corning PM 15-U40A (PM)f
TEC Operation: Typ. / Max @ TCASE = 25 °C / 65 °C
TEC Current - 0.35 A 1.5 A - 0.35 A 1.5 A - 0.3 A 1.5 A - 0.3 A 1.5 A
TEC Voltage - 0.5 V 3.5 V - 0.5 V 3.5 V - 0.3 V 3.5 V - 0.3 V 3.5 V
Thermistor Resistance - 10 kΩ - - 10 kΩ - - 10 kΩ - - 10 kΩ -
Performance Plots (Click Icon for Plot)
Output Spectrum Optical Spectrum Optical Spectrum Optical Spectrum Optical Spectrum
LIV Plot LIV Curves LIV Curves LIV Curves LIV Curves
  • These Operating Specifications are a consistent set of values which will yield the specified performance. Exceeding the maximum operating parameters in the table may cause device failure.
  • The center wavelength is defined by an average weighted by relative amplitude and may not correspond to the peak power or FWHM center wavelength. See the definitions above for details.
  • At Operating Current
  • Corresponds to the output of the fiber pigtail.
  • Measurement Resolution = 0.1 nm
  • The connector key is aligned to the slow axis of the PM fiber.

Spectral Comparison of NIR SLDs 

These graphs are meant to provide a comparison within the complete NIR range and between smaller ranges within the NIR for superluminescent diodes. The raw data for all the optical spectra are available for download here.

Optical spectra for all NIR SLEDs.
Click to Enlarge

Optical spectra comparison for all NIR SLDs.
Optical spectra for 770 to 850 nm NIR SLEDs.
Click to Enlarge

Optical spectra comparison for NIR SLDs with center wavelengths from
770 to 850 nm. 
Optical spectra for 880 to 1050 nm NIR SLEDs.
Click to Enlarge

Optical spectra comparison for NIR SLDs with center wavelengths from
880 to 1050 nm.
Optical spectra for 1325 to 1550 nm NIR SLEDs.
Click to Enlarge

Optical spectra comparison for NIR SLDs with center wavelengths from
1325 to 1550 nm.

Butterfly Package, Type 1

Pin drawing for butterfly package
Pin Description Pin Description
1 + TEC 14 - TEC
2 Thermistor 13 Case Ground
3 NC 12 NC
4 NC 11 SLD Cathode
5 Thermistor 10 SLD Anode
6 NC 9 NC
7 NC 8 NC

Superluminescent Diode Performance:

Item # Center
Wavelength
Package Output Powera Bandwidth
(3 dB)
Optical
Spectrum
LIV Curvesb Equivalent
Benchtop Source
SLD405B 405 nm Butterfly, SM Pigtail 5 mW 3 nm Spectrum Icon LIV Curve Icon N/A
SLD450B 450 nm Butterfly, SM Pigtail 5 mW 6 nm Spectrum Icon LIV Curve Icon N/A
SLD450T 450 nm TO-56 10 mW 5 nm Spectrum Icon LIV Curve Icon N/A
SLD510B 510 nm Butterfly, SM Pigtail 1.5 mW 8 nm Spectrum Icon LIV Curve Icon N/A
SLD635B 635 nm Butterfly, SM Pigtail 3 mW 6 nm Spectrum Icon LIV Curve Icon N/A
SLD635T 635 nm TO-56 10 mW 5 nm Spectrum Icon LIV Curve Icon N/A
SLD650B 650 nm Butterfly, SM Pigtail 3 mW 6 nm Spectrum Icon LIV Curve Icon N/A
SLD650T 650 nm TO-56 10 mW 5 nm Spectrum Icon LIV Curve Icon N/A
SLD770S 770 nmc Butterfly, SM Pigtail 5.5 mW 18 nm Spectrum Icon LIV Curve Icon N/A
SLD810S 810 nmc Butterfly, SM Pigtail 15 mW 30 nm Spectrum Icon LIV Curve Icon N/A
SLD830S-A10W 830 nmc Butterfly, SM Pigtail 10 mW (Min) 60 nm Spectrum Icon LIV Curve Icon N/A
SLD830S-A20W 830 nmc Butterfly, SM Pigtail 20 mW (Min) 55 nm N/A
SLD830S-A10 830 nmc Butterfly, SM Pigtail 13 mW 20 nm Spectrum Icon LIV Curve Icon N/A
SLD830S-A20 830 nmc Butterfly, SM Pigtail 22 mW 20 nm Spectrum Icon LIV Curve Icon N/A
SLD850S-A10W 850 nmc Butterfly, SM Pigtail 10 mW (Min) 60 nm N/A
SLD850S-A20W 850 nmc Butterfly, SM Pigtail 20 mW (Min) 55 nm N/A
SLD880S-A7 880 nmc Butterfly, SM Pigtail 7 mW 40 nm Spectrum Icon LIV Curve Icon N/A
SLD880S-A25 880 nmc Butterfly, SM Pigtail 25 mW 40 nm Spectrum Icon LIV Curve Icon N/A
SLD920S 920 nmc Butterfly, SM Pigtail 15 mW 65 nm Spectrum Icon LIV Icon N/A
SLD920P 920 nmc Butterfly, PM Pigtail 15 mW 65 nm Spectrum Item LIV Icon N/A
SLD930S-A40W 930 nmc Butterfly, SM Pigtail 40 mW 45 nm Spectrum Icon LIV Icon N/A
SLD930P-A40W 930 nmc Butterfly, PM Pigtail 40 mW 45 nm Spectrum Item LIV Icon N/A
SLD970S-A40W 970 nmc Butterfly, SM Pigtail 40 mW 50 nm Spectrum Icon LIV Curve Icon N/A
SLD970P-A40W 970 nmc Butterfly, PM Pigtail 40 mW 50 nm Spectrum Icon LIV Curve Icon N/A
SLD1050S 1050 nmc Butterfly, SM Pigtail 8 mW 50 nm Optical Spectrum LIV Curves N/A
SLD1050P 1050 nmc Butterfly, PM Pigtail 8 mW 50 nm Optical Spectrum LIV Curves N/A
SLD1050S-A60 1050 nmc Butterfly, SM Pigtail 60 mW 70 nm Spectrum Icon LIV Curve Icon N/A
SLD1050P-A60 1050 nmc Butterfly, PM Pigtail 60 mW 70 nm Spectrum Icon LIV Curve Icon N/A
SLD1021S 1310 nmc Butterfly, SM Pigtail 12.5 mW 85 nm Optical Spectrum LIV Curves S5FC1021S
SLD1018S 1310 nmc Butterfly, SM Pigtail 30 mW 45 nm Optical Spectrum LIV Curves S5FC1018S
S5FC1018P
SLD1018P 1310 nmc Butterfly, PM Pigtail 30 mW 45 nm Optical Spectrum LIV Curves S5FC1018S
S5FC1018P
SLD1325 1325 nmc Butterfly, SM Pigtail 10 mW (Min) 100 nm (Min) N/A
SLD1450S 1450 nmc Butterfly, SM Pigtail 25 mW 54 nm N/A
SLD1450P 1450 nmc Butterfly, PM Pigtail 25 mW 54 nm N/A
SLD1550S-A1 1550 nmc Butterfly, SM Pigtail 1.0 mW 110 nm Optical Spectrum LIV Curves N/A
SLD1550P-A1 1550 nmc Butterfly, PM Pigtail 1.0 mW 110 nm Optical Spectrum LIV Curves N/A
SLD1550S-A2 1550 nmc Butterfly, SM Pigtail 2.5 mW 90 nm Optical Spectrum LIV Curves S5FC1550S-A2
S5FC1550P-A2
SLD1550P-A2 1550 nmc Butterfly, PM Pigtail 2.5 mW 90 nm Optical Spectrum LIV Curves S5FC1550S-A2
S5FC1550P-A2
SLD1005S 1550 nmc Butterfly, SM Pigtail 22 mW 50 nm Optical Spectrum LIV Curves S5FC1005S
SLD1550S-A40 1550 nmc Butterfly, SM Pigtail 40 mW 33 nm Optical Spectrum LIV Curves N/A
SLD1550P-A40 1550 nmc Butterfly, PM Pigtail 40 mW 33 nm Optical Spectrum LIV Curves N/A
  • Values are typical unless otherwise noted.
  • Basic superluminescent diode characteristics can be measured by increasing current (I) while measuring the device voltage (V) and light output (L). The resulting data is usually referred to as an LIV curve.
  • For more information on how the center wavelength for our NIR SLDs is defined, please see the Specs tab on the NIR Superluminescent Diodes presentation.

Posted Comments:
Jihyeok Jung  (posted 2021-11-03 04:50:40.15)
Hello! I try to use SLD810S with driver CLD1015. According to manual YouTube video(https://www.youtube.com/watch?v=LAixCOso-FE&t=874s), we should check whether the Steinhart-Hart A,B and C of SLD is right. However, as we didn't get the spec sheet of SLD810S. Also, in thorlab website, only SLD1325 had these values. So, we want to know the SHH A,B and C values of SLD810S. Could you let me know?
YLohia  (posted 2021-11-12 02:52:25.0)
Hello, thank you for contacting Thorlabs. Please see the Steinhart Coefficients below: A: 1.129241E-03; B: 2.341077E-04; C: 8.775468E-08.
Zhen Qiu  (posted 2021-09-27 09:31:31.963)
dear thorlabs I have LDC220C Benchtop LD Current Controller, ±2 A TED200C Benchtop Temperature Controller, ±2 A / 12 W and LM14S2 Universal 14-Pin Butterfly Laser Diode Mount can these (LDC220C,TED200C, LM14S2) drive the SLD850S-A20W? we currently do NOT have CLD1015 compact diode driver thank you Zhen Qiu
zhen qiu  (posted 2021-09-23 14:32:13.187)
dear Thorlabs we are planning to purchase the NIR Superluminescent Diodes (SLDs), Center Wavelengths from 770 nm to 1550 nm, we are aiming for 830nm, 850nm currently, we have LDC220C, Benchtop LD Current Controller, ±2 A TED200C, Benchtop Temperature Controller, ±2 A / 12 W can these be used for driving the SLD? we do not have CLD1015, wish to get your help thank you zhen
YLohia  (posted 2021-10-11 02:51:09.0)
Hello Zhen, thank you for contacting Thorlabs. The LDC220C can certainly be used to drive our NIR SLEDs with the LM14S2 mount and TED200C driver, but please note that the noise will be greater than that of the CLD1015.
Byeong-Kwan YANG  (posted 2020-11-13 05:31:56.183)
This is YANG, Byeong-Kwan of Jiny Photonics in S. Korea. I purchased SLD830S-A20W (serial number: SLD-41707-40313.2.A04) and I am testing it now. When measured with a low resolution spectrometer (USB4000), its spectrum comes out smoothly. We are currently manufacturing a high-resolution spectroscopy (spectral resolution 0.04 nm), and if I measure the spectrum with the spectrometer being manufactured, high-frequency components are measured. I don't have a spectrum analyzer, so I can't get a high resolution spectrum to verify. Can I get the high resolution spectrum of the SLD830S-A20W?
YLohia  (posted 2020-11-13 02:02:12.0)
Hello, we measure each unit with a high resolution optical spectrum analyzer (resolution 0.02 nm). I have reached out to you directly with the data for your serial number.
Ronald Dekker  (posted 2019-12-13 03:00:30.13)
Can the SLD830S-A20W also be delivered with a PM fiber?
YLohia  (posted 2019-12-13 09:54:13.0)
Hello, we will reach out to you directly to discuss the possibility of offering this.
max.koeppel  (posted 2016-09-08 06:30:40.14)
Dear ladies and gentlemen, Is the SLD1005S (22 mW SLD, CWL= 1550 nm, FWHM = 50 nm, Butterfly Pkg, SM Fiber, FC/APC) also available with a PM fiber output (FC/APC)? Regards, Max
tfrisch  (posted 2016-09-08 11:19:30.0)
Hello, I will contact you directly with a quote.
hallt  (posted 2014-03-20 17:38:49.003)
Hi. I'm also interested in intensity noise. Do you have any measurements for your SLDs that you could share?
cdaly  (posted 2014-04-09 03:32:58.0)
Response from Chris at Thorlabs: We will contact you directly information on the relative noise intensity. Laser diodes generally show a peak in the RIN curve from some resonance effects of the cavity, whereas ASE sources do not. Noise at various frequencies(frequency of intensity noise, not wavelength of the light) in ASE source would be more flat.
neil.troy  (posted 2014-03-13 22:36:43.313)
What fibers are used with all of these modules?
myanakas  (posted 2014-03-20 12:19:08.0)
Response from Mike at Thorlabs: Thank you for your feedback. Based on your feedback we have updated our web presentation to include the fiber types included with our SLDs. This information can now be found in the specification tables located in the “Specs” tab and in the Sub Groups above where the Products are sold.
user  (posted 2014-01-28 10:32:58.903)
Hello: what is the typical output power (normalized to peak at 1050 nm) for SLD1050S between 950 nm to 850 nm? Thanks.
jlow  (posted 2014-01-30 11:51:35.0)
Response from Jeremy at Thorlabs: The intensity at 950nm is estimated to be around -25dB lower than the peak. It falls sharply after that to around -60dB at 850nm. Since you did not leave your contact info, can you contact me at techsupport@thorlabs.com please? I can provide a spectral scan for a SLD1050S unit.
bdada  (posted 2012-04-25 10:50:00.0)
Response from Buki at Thorlabs to alexandru.serb05: Thank you for your feedback. Gain ripple is not intensity noise. It is due to interference between two SLD facets such that, on its spectrum, you will see variation of the amplitude of the spectrum density vs. wavelength. SLD noise only depends its bandwidth and in principle, it is frequency independent. We have done some studies on that and I have contacted you with the results.
alexandru.serb05  (posted 2012-04-24 05:00:41.0)
Hallo, I just need to ask a couple of questions: 1) Could you please explain to me the concept of gain ripple? Is it variations in average output intensity: a) between different LEDs? b) between different frequency bins within the same LED? c) at each frequency bin over time within the same LED? d) Something completely different? 2) Is there a way I can see some noise plots for all these products? It would be particularly useful if I had access to such data and comparable data relating to the pigtailed laser diode range of products you offer. Noise vs frequency as measured by the same photodetector capturing the entire outgoing beam at a specificed power output is the sort of plot I have in my mind, but anything that yields meaningful comparative noise data will do. Note: both laser and non-laser diode may be assumed to be driven by a controller + TEC, but without feedback stabilisation if such data is available. Introducing feedback brings along a whole array of other parameters and will only make comparisons more difficult... Thanks.

770 nm Superluminescent Diode

In order to support OCT imaging applications, this SLD is designed with a low gain ripple no higher than 0.3 dB (RMS) and a typical ripple value of 0.01 dB (RMS). More information on Thorlabs' SLDs for OCT systems can be found here. Note that the bandwidth will decrease as the current is decreased; bandwidth specifications below are specified at the operating current.

Item #a SLD770S
Parameter Min Typ. Max
Operating Current - - 170 mA
Center Wavelengthb 760 nm 770 nm 780 nm
Spectral Shape Near Gaussian
ASE Powerc 4.5 mW 5.5 mW -
Optical 3 dB Bandwidthc,d 15 nm 18 nm -
RMS Gain Ripplec,e - 0.01 dB 0.3 dB
Fiber Type 780HP
Performance Graphs (Click Icons for Plots)
Output Spectrum
LIV Plot
Gain Ripplee
  • Full specifications are available by clicking on the Specs tab above.
  • The center wavelength for an SLD with a near-Gaussian spectral shape is defined by an average weighted by relative amplitude and may not correspond to the peak power or FWHM center wavelength. See the Specs tab above for details.
  • At Operating Current
  • At the minimum ASE power, the minimum 3 dB bandwidth is guaranteed.
  • Measurement Resolution = 0.02 nm
Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal Price Available
SLD770S Support Documentation
SLD770S5.5 mW SLD, CWL = 770 nm, 18 nm 3 dB BW, Butterfly Pkg., SM Fiber, FC/APC
$1,400.00
Lead Time

810 nm Superluminescent Diodes

In order to support OCT imaging applications, these SLDs are designed with a low gain ripple no higher than 0.15 dB (RMS) and a typical ripple value of 0.03 dB (RMS). More information on Thorlabs' SLDs for OCT systems can be found here. Note that the bandwidth will decrease as the current is decreased; bandwidth specifications below are specified at the operating current.

Item #a SLD810S
Parameter Min Typ. Max
Operating Current - - 270 mA
Center Wavelengthb 795 nm 810 nm 825 nm
Spectral Shape Near Gaussian
ASE Powerc 13 mW 15 mW -
Optical 3 dB Bandwidthc,d 25 nm 30 nm -
RMS Gain Ripplec,e - 0.03 dB 0.15 dB
Fiber Type 780HP
Performance Graphs (Click Icons for Plots)
Output Spectrum
LIV Plot
Gain Ripplee
  • Full specifications are available by clicking on the Specs tab above.
  • The center wavelength for an SLD with a near-Gaussian spectral shape is defined by an average weighted by relative amplitude and may not correspond to the peak power or FWHM center wavelength. See the Specs tab above for details.
  • At Operating Current
  • At the minimum ASE power, the minimum 3 dB bandwidth is guaranteed.
  • Measurement Resolution = 0.02 nm
Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal Price Available
SLD810S Support Documentation
SLD810S15 mW SLD, CWL = 810 nm, 30 nm 3 dB BW, Butterfly Pkg., SM Fiber, FC/APC
$1,826.61
Today

830 nm Superluminescent Diodes

In order to support OCT imaging applications, these SLDs are designed with a low gain ripple no higher than 0.3 dB (RMS) and a typical ripple value of 0.03 dB (RMS). More information on Thorlabs' SLDs for OCT systems can be found here. Note that the bandwidth will decrease as the current is decreased; bandwidth specifications below are specified at the operating current.

Item #a SLD830S-A10W SLD830S-A20W SLD830S-A10 SLD830S-A20
Parameter Min Typ. Max Min Typ. Max Min Typ. Max Min Typ. Max
Operating Current (mA) - - 240 - - 330 - - 150 - - 240
Center Wavelength (nm)b 815 830 845 815 830 845 820 830 840 820 830 840
Spectral Shape Flat Top Flat Top Near Gaussian Near Gaussian
ASE Power (mW)c,d 10 - - 20 - - 10 13 - 20 22 -
Optical 3 dB Bandwidth (nm)c,e 50 60 - 40 55 - 17 20 - 17 20 -
Optical 20 dB Bandwidth (nm)c - - - - - - - 50 - - 50 -
RMS Gain Ripple (dB)c,f - 0.06 0.3 - 0.03 0.3 - 0.03 0.15 - 0.03 0.15
Fiber Type 780HP 780HP 780HP 780HP
Performance Graphs (Click Icons for Plots)
Output Spectrum Optical Spectrum Optical Spectrum
LIV Plot LIV Curves LIV Curves
Gain Ripplef
  • Additional specifications are available by clicking on the Specs tab above.
  • The center wavelength for an SLD with a flat-top spectral shape is defined as the midpoint of the 3 dB bandwidth; for an SLD with a near-gaussian spectral shape, the center wavelength is defined by an average weighted by relative amplitude and may not correspond to the peak power or FWHM center wavelength. See the Specs tab above for details.
  • At Operating Current
  • Corresponds to the output of the fiber pigtail.
  • For SLD830S-A10W and SLD830S-A20W: At the minimum ASE power, the minimum 3 dB bandwidth is guaranteed.
  • Measurement Resolution = 0.02 nm
Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal Price Available
SLD830S-A10W Support Documentation
SLD830S-A10W10 mW (Min) SLD, CWL = 830 nm, 60 nm 3 dB BW, Butterfly Pkg., SM Fiber, FC/APC
$2,111.50
Today
SLD830S-A20W Support Documentation
SLD830S-A20W20 mW (Min) SLD, CWL = 830 nm, 55 nm 3 dB BW, Butterfly Pkg., SM Fiber, FC/APC
$2,350.00
Today
SLD830S-A10 Support Documentation
SLD830S-A1013 mW SLD, CWL = 830 nm, 20 nm 3 dB BW, Butterfly Pkg., SM Fiber, FC/APC
$1,826.61
Today
SLD830S-A20 Support Documentation
SLD830S-A2022 mW SLD, CWL = 830 nm, 20 nm 3 dB BW, Butterfly Pkg., SM Fiber, FC/APC
$2,157.75
Today

850 nm Superluminescent Diodes

In order to support OCT imaging applications, these SLDs are designed with a low gain ripple no higher than 0.3 dB (RMS) and a typical ripple value of 0.03 dB (RMS). More information on Thorlabs' SLDs for OCT systems can be found here. Note that the bandwidth will decrease as the current is decreased; bandwidth specifications below are specified at the operating current.

Item #a SLD850S-A10W SLD850S-A20W
Parameter Min Typ. Max Min Typ. Max
Operating Current (mA) - - 180 - - 340
Center Wavelength (nm)b 835 850 865 835 850 865
Spectral Shape Flat Top Flat Top
ASE Power (mW)c,d 10 - - 20 - -
Optical 3 dB Bandwidth (nm)c,e 40 60 - 40 55 -
RMS Gain Ripple (dB)c,f - 0.03 0.3 - 0.03 0.3
Fiber Type 780HP 780HP
Performance Graphs (Click Icons for Plots)
Output Spectrum
LIV Plot
Gain Ripplef
  • Additional specifications are available by clicking on the Specs tab above.
  • Defined as the midpoint of the 3 dB bandwidth. See the Specs tab above for details.
  • At Operating Current
  • Corresponds to the output of the fiber pigtail.
  • At the minimum ASE power, the minimum 3 dB bandwidth is guaranteed.
  • Measurement Resolution = 0.02 nm
Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal Price Available
SLD850S-A10W Support Documentation
SLD850S-A10W10 mW (Min) SLD, CWL = 850 nm, 60 nm 3 dB BW, Butterfly Pkg., SM Fiber, FC/APC
$2,150.00
Today
SLD850S-A20W Support Documentation
SLD850S-A20W20 mW (Min) SLD, CWL = 850 nm, 55 nm 3 dB BW, Butterfly Pkg., SM Fiber, FC/APC
$2,350.00
Today

880 nm Superluminescent Diodes

These SLDs are designed to be used in OCT imaging applications. They have a low gain ripple no larger than 0.3 dB (RMS) and a typical ripple value 0.03 dB (RMS). More information on Thorlabs' SLDs for OCT systems can be found here. Note that the bandwidth will decrease as the current is decreased; bandwidth specifications below are specified at the operating current.

Item #a SLD880S-A7 SLD880S-A25
Parametera Min Typ. Max Min Typ. Max
Operating Current (mA) - - 225 - - 410
Center Wavelength (nm)b 860 880 900 860 880 900
Spectral Shape Flat Top Flat Top
ASE Power (mW)c,d 6 7 - 23 25 -
Optical 3 dB Bandwidth (nm)c 35 40 - 35 40 -
Optical 20 dB Bandwidth (nm)c - 80 - - 80 -
RMS Gain Ripple (dB)c,e - 0.06 0.3 - 0.06 0.3
Fiber Type 780HP 780HP
Performance Graphs (Click Icons for Plots)
Output Spectrum Optical Spectrum Optical Spectrum
LIV Plot LIV Curves LIV Curves
Gain Ripplee
  • Additional specifications are available by clicking on the Specs tab above.
  • Defined as the midpoint of the 3 dB bandwidth. See the Specs tab above for details.
  • Specification given at the operating current. At the minimum ASE power, the minimum 3 dB bandwidth is guaranteed.
  • Corresponds to the output of the fiber pigtail.
  • Measurement Resolution = 0.02 nm
Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal Price Available
SLD880S-A7 Support Documentation
SLD880S-A77 mW SLD, CWL = 880 nm, 40 nm 3 dB BW, Butterfly Pkg., SM Fiber, FC/APC
$1,856.58
Today
SLD880S-A25 Support Documentation
SLD880S-A2525 mW SLD, CWL = 880 nm, 40 nm 3 dB BW, Butterfly Pkg., SM Fiber, FC/APC
$2,280.94
Today

920 nm Superluminescent Diodes

These SLDs are designed to be used in OCT imaging applications. They have a low gain ripple no larger than 0.3 dB (RMS) and a typical ripple value 0.02 dB (RMS). More information on Thorlabs' SLDs for OCT systems can be found here. Note that the bandwidth will decrease as the current is decreased; bandwidth specifications below are specified at the operating current.

Item #a SLD920x
Parameter Min Typ. Max
Operating Current (mA) - - 420
Center Wavelength (nm)b 895 920 945
Spectral Shape Flat Top
ASE Power (mW)c,d 10 15 -
Optical 3 dB Bandwidth (nm)c 50 65 -
RMS Gain Ripple (dB)c,e - 0.02 0.3
Fiber Type 780HP (SM)
PM780-HP (PM)f
Performance Graphs (Click Icons for Plots)
Output Spectrum Optical Spectrum
LIV Plot LIV Curves
Gain Ripplee
  • Additional specifications are available by clicking on the Specs tab above.
  • Defined as the midpoint of the 3 dB bandwidth. See the Specs tab above for details.
  • Specification given at the operating current. At the minimum ASE power, the minimum 3 dB bandwidth is guaranteed.
  • Corresponds to the output of the fiber pigtail.
  • Measurement Resolution = 0.02 nm
  • The connector key is aligned to the slow axis of the PM fiber.
Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal Price Available
SLD920S Support Documentation
SLD920S15 mW SLD, CWL = 920 nm, 65 nm 3 dB BW, Butterfly Pkg., SM Fiber, FC/APC
$1,400.00
Today
SLD920P Support Documentation
SLD920P15 mW SLD, CWL = 920 nm, 65 nm 3 dB BW, Butterfly Pkg., PM Fiber, FC/APC
$1,550.00
Today

930 nm Superluminescent Diodes

These SLDs are designed to be used in OCT imaging applications. They have a low gain ripple no larger than 0.3 dB (RMS) and a typical ripple value 0.06 dB (RMS). More information on Thorlabs' SLDs for OCT systems can be found here. Note that the bandwidth will decrease as the current is decreased; bandwidth specifications below are specified at the operating current.

Item #a SLD930x-A40W
Parameter Min Typ. Max
Operating Current (mA) - - 800
Center Wavelength (nm)b 915 930 945
Spectral Shape Flat Top
ASE Power (mW)c,d 36 40 -
Optical 3 dB Bandwidth (nm)c 40 45 -
RMS Gain Ripple (dB)c,e - 0.06 0.3
Fiber Type 780HP (SM)
PM780-HP (PM)f
Performance Graphs (Click Icons for Plots)
Output Spectrum
Optical Spectrum
SM
Optical Spectrum
PM
LIV Plot
LIV Curves
SM
LIV Curves
PM
Gain Ripplee

SM

PM
  • Additional specifications are available by clicking on the Specs tab above.
  • Defined as the midpoint of the 3 dB bandwidth. See the Specs tab above for details.
  • Specification given at the operating current. At the minimum ASE power, the minimum 3 dB bandwidth is guaranteed.
  • Corresponds to the output of the fiber pigtail.
  • Measurement Resolution = 0.02 nm
  • The connector key is aligned to the slow axis of the PM fiber.
Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal Price Available
SLD930S-A40W Support Documentation
SLD930S-A40W40 mW SLD, CWL = 930 nm, 45 nm 3 dB BW, Butterfly Pkg., SM Fiber, FC/APC
$2,499.00
Today
SLD930P-A40W Support Documentation
SLD930P-A40W40 mW SLD, CWL = 930 nm, 45 nm 3 dB BW, Butterfly Pkg., PM Fiber, FC/APC
$2,649.00
Today

970 nm Superluminescent Diodes

In order to support OCT imaging applications, these SLDs are designed with a low gain ripple no higher than 0.2 dB (RMS) and a typical ripple value of 0.03 dB (RMS). More information on Thorlabs' SLDs for OCT systems can be found here. Note that the bandwidth will decrease as the current is decreased; bandwidth specifications below are specified at the operating current.

Item #a SLD970x-A40W
Parameter Min Typical Max
Operating Current (mA) - 1000 1010
Center Wavelength (nm)b 945 970 995
Spectral Shape Flat Top
ASE Power (mW)c,d 35 40 -
Optical 3 dB Bandwidth (nm)c,e 40 50 -
RMS Gain Ripple (dB)c,f - 0.03 0.2
Fiber Type HI1060 (SM)
PM980-XP (PM)g
Performance Graphs (Click Icons for Plots)
Output Spectrum
LIV Plot
Gain Ripplef
  • Additional specifications are available by clicking on the Specs tab above.
  • Defined as the midpoint of the 3 dB bandwidth. See the Specs tab above for details.
  • At Operating Current
  • Corresponds to the output of the fiber pigtail.
  • At the minimum ASE power, the minimum 3 dB bandwidth is guaranteed.
  • Measurement Resolution = 0.02 nm
  • The connector key is aligned to the slow axis of the PM fiber.
Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal Price Available
SLD970S-A40W Support Documentation
SLD970S-A40W40 mW (Typ.) SLD, CWL = 970 nm, 50 nm 3 dB BW, Butterfly Pkg., SM Fiber, FC/APC
$2,499.00
Today
SLD970P-A40W Support Documentation
SLD970P-A40W40 mW (Typ.) SLD, CWL = 970 nm, 50 nm 3 dB BW, Butterfly Pkg., PM Fiber, FC/APC
$2,649.00
Today

1050 nm Superluminescent Diodes

The SLD1050S-A60 is designed to be used in OCT imaging applications. More information on Thorlabs' SLDs for OCT systems can be found here. Note that the bandwidth will decrease as the current is decreased; bandwidth specifications below are specified at the operating current.

Item #a SLD1050S SLD1050P SLD1050S-A60 SLD1050P-A60
Parameter Min Typ. Max Min Typ. Max Min Typ. Max Min Typ. Max
Operating Current (mA) - - 300 - - 300 - - 1010 - - 1010
Center Wavelength (nm)b 1030 1050 1070 1030 1050 1070 1025 1050 1075 1025 1050 1075
Spectral Shape Near Gaussian Near Gaussian Flat Top Flat Top
ASE Power (mW)c,d 6 8 - 6 8 - 55 60 - 55 60 -
Optical 3 dB Bandwidth (nm)c,e 40 50 - 40 50 - 60 70 - 60 70 -
Optical 20 dB Bandwidth (nm)c - - - - - - - 100 - - - -
RMS Gain Ripple (dB)c,f - 0.1 0.25 - 0.1 0.25 - 0.03 0.2 - 0.06 0.3
Fiber Type HI1060 PM980-XPg HI1060 PM980-XPg
Performance Graphs (Click Icons for Plots)
Output Spectrum Optical Spectrum Optical Spectrum Optical Spectrum Optical Spectrum
LIV Plot LIV Curves LIV LIV LIV
Gain Ripplef - -
  • Additional specifications are available by clicking on the Specs tab above.
  • For an SLD with a near-gaussian spectral shape, the center wavelength is defined by an average weighted by relative amplitude and may not correspond to the peak power or FWHM center wavelength; the center wavelength for an SLD with a flat-top spectral shape is defined as the midpoint of the 3 dB bandwidth. See the Specs tab above for details.
  • Specification given at the operating current. For SLD1050S-A60: At the minimum ASE power, the minimum 3 dB bandwidth is guaranteed.
  • Corresponds to the output of the fiber pigtail.
  • For SLD1050P-A60: At the minimum ASE power, the minimum 3 dB bandwidth is guaranteed.
  • Measurement Resolution = 0.02 nm
  • The connector key is aligned to the slow axis of the PM fiber.
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SLD1050S Support Documentation
SLD1050S8 mW SLD, CWL = 1050 nm, 50 nm 3 dB BW, Butterfly Pkg., SM Fiber, FC/APC
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SLD1050P Support Documentation
SLD1050P8 mW SLD, CWL = 1050 nm, 50 nm 3 dB BW, Butterfly Pkg., PM Fiber, FC/APC
$1,892.63
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SLD1050S-A60 Support Documentation
SLD1050S-A6060 mW SLD, CWL = 1050 nm, 70 nm 3 dB BW, Butterfly Pkg., SM Fiber, FC/APC
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SLD1050P-A6060 mW SLD, CWL = 1050 nm, 70 nm 3 dB BW, Butterfly Pkg., PM Fiber, FC/APC
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1310 nm Superluminescent Diodes

Note that the bandwidth will decrease as the current is decreased; bandwidth specifications below are specified at the operating current.

Item #a SLD1021S SLD1018x
Parameter Min Typ. Max Min Typ. Max
Operating Current (mA) - 700 900 - 600 800
Center Wavelength (nm)b 1290 - 1330 1290 - 1330
Spectral Shape Near Gaussian Near Gaussian
ASE Power (mW)c,d 10 12.5 - 22 30 -
Optical 3 dB Bandwidth (nm)c 80 85 - 40 45 -
RMS Gain Ripple (dB)c,e - - 0.35 - 0.1 0.35
Fiber Type SMF-28e+ SMF-28e+ (SM)
Corning PM 13-U40A (PM)f
Benchtop Version S5FC1021S S5FC1018S (SM)
S5FC1018P (PM)
Performance Plots (Click Icons for Plots)
Output Spectrum Optical Spectrum Optical Spectrum
LIV Plot LIV Curves LIV Curves
  • Additional specifications are available by clicking on the Specs tab above.
  • The center wavelength is defined by an average weighted by relative amplitude and may not correspond to the peak power or FWHM center wavelength. See the Specs tab above for details.
  • At Operating Current
  • Corresponds to the output of the fiber pigtail.
  • Measurement Resolution = 0.1 nm
  • The connector key is aligned to the slow axis of the PM fiber.
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SLD1021S Support Documentation
SLD1021S12.5 mW SLD, CWL 1310 nm, 85 nm 3 dB BW, Butterfly Pkg., SM Fiber, FC/APC
$2,125.28
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SLD1018S Support Documentation
SLD1018S30 mW SLD, CWL 1310 nm, 45 nm 3 dB BW, Butterfly Pkg., SM Fiber, FC/APC
$2,468.31
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SLD1018P Support Documentation
SLD1018P30 mW SLD, CWL 1310 nm, 45 nm 3 dB BW, Butterfly Pkg., PM Fiber, FC/APC
$2,633.87
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1325 nm Superluminescent Diode

The SLD1325 is designed to have a broad bandwidth of >100 nm for improved resolution when used in Spectral Domain Optical Coherence Tomography (SD-OCT) systems. This SLD is packaged with an integrated TEC and thermistor for temperature control, as well as an optical isolator for enhanced optical stability. More information on Thorlabs' SLDs for OCT systems can be found here. Note that the bandwidth will decrease as the current is decreased; bandwidth specifications below are specified at the operating current.

Item #a SLD1325
Parameter Min Typ. Max
Operating Current (mA) - - 780
Center Wavelength (nm)b - 1325 -
Spectral Shape Flat Top
ASE Power (mW)c 10 - -
Optical 3 dB Bandwidth (nm) 100 - -
Fiber Type SMF-28e
Integrated Optical Isolator
Isolation (dB) 30 - -
Performance Plots (Click Icons for Plots)
Output Spectrum
LIV Plot
  • Additional specifications are available by clicking on the Specs tab above.
  • Defined as the midpoint of the 3 dB bandwidth. See the Specs tab above for details.
  • Corresponds to the output of the fiber pigtail.
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SLD1325 Support Documentation
SLD132510 mW (Min) SLD, CWL = 1325 nm, 100 nm 3 dB BW (Min), Butterfly Pkg., SM Fiber, FC/APC
$3,662.97
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1450 nm Superluminescent Diodes

These SLDs are designed to be used in OCT imaging applications. They have a low gain ripple no larger than 0.35 dB (RMS) and a typical ripple value 0.06 dB (RMS). More information on Thorlabs' SLDs for OCT systems can be found here. Note that the bandwidth will decrease as the current is decreased; bandwidth specifications below are specified at the operating current.

Item #a SLD1450x
Parameter Min Typ. Max
Operating Current (mA) - 500 600
Center Wavelength (nm)b 1435 1450 1465
Spectral Shape Near Gaussian
ASE Power (mW)c,d 23 25 -
Optical 3 dB Bandwidth (nm)c 50 54 -
RMS Gain Ripple (dB)c,e - 0.06 0.35
Fiber Type SMF-28e (SM)
Corning® PM15-U40A (PM)
Performance Graphs (Click Icons for Plots)
Output Spectrum
Optical Spectrum
SM
Optical Spectrum
PM
LIV Plot
LIV Curves
SM
LIV Curves
PM
Gain Ripplee

SM

PM
  • Additional specifications are available by clicking on the Specs tab above.
  • The center wavelength is defined by an average weighted by relative amplitude and may not correspond to the peak power or FWHM center wavelength. See the Specs tab above for details.
  • Specification given at the operating current. At the minimum ASE power, the minimum 3 dB bandwidth is guaranteed.
  • Corresponds to the output of the fiber pigtail.
  • Measurement Resolution = 0.1 nm
Based on your currency / country selection, your order will ship from Newton, New Jersey  
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SLD1450S Support Documentation
SLD1450S25 mW SLD, CWL = 1450 nm, 54 nm 3 dB BW, Butterfly Pkg., SM Fiber, FC/APC
$1,850.00
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SLD1450P25 mW SLD, CWL = 1450 nm, 54 nm 3 dB BW, Butterfly Pkg., PM Fiber, FC/APC
$2,050.00
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1550 nm Superluminescent Diodes

Note that the bandwidth will decrease as the current is decreased; bandwidth specifications below are specified at the operating current.

Item #a SLD1550x-A1 SLD1550x-A2 SLD1005S SLD1550x-A40
Parameter Min Typ. Max Min Typ. Max Min Typ. Max Min Typ. Max
Operating Current (mA) - 450 500 - 550 600 - 600 800 - 750 900
Center Wavelength (nm)b 1520 1550 1580 1520 1550 1580 1530 1550 1570 1530 1550 1570
Spectral Shape Near Gaussian Near Gaussian Near Gaussian Near Gaussian
ASE Power (mW)c,d 0.75 1.0 - 2.0 2.5 - 20 22 - 35 40 -
Optical 3 dB Bandwidth (nm)c 100 110 - 85 90 - 45 50 - 30 33 -
RMS Gain Ripple (dB)c,e - - 0.1 - - 0.25 - 0.2 0.35 - 0.2 0.35
Fiber Type SMF-28e+ (SM)
Corning PM 15-U40A (PM)f
SMF-28e+ SMF-28e+ (SM)
Corning PM 15-U40A (PM)f
Benchtop Version N/A S5FC1550S-A2 (SM)
S5FC1550P-A2 (PM)
S5FC1005S N/A
Performance Plots (Click Icon for Plot)
Output Spectrum Optical Spectrum Optical Spectrum Optical Spectrum Optical Spectrum
LIV Plot LIV Curves LIV Curves LIV Curves LIV Curves
  • Additional specifications are available by clicking on the Specs tab above.
  • Defined as the midpoint of the 3 dB bandwidth. See the Specs tab above for details.
  • At Operating Current
  • Corresponds to the output of the fiber pigtail.
  • Measurement Resolution = 0.1 nm
  • The connector key is aligned to the slow axis of the PM fiber.
Based on your currency / country selection, your order will ship from Newton, New Jersey  
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SLD1550S-A1 Support Documentation
SLD1550S-A11.0 mW SLD, CWL=1550 nm, 110 nm 3 dB BW, Butterfly Package, SM Fiber, FC/APC
$1,659.97
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SLD1550P-A11.0 mW SLD, CWL=1550 nm, 110 nm 3 dB BW, Butterfly Package, PM Fiber, FC/APC
$1,803.89
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SLD1550S-A22.5 mW SLD, CWL=1550 nm, 90 nm 3 dB BW, Butterfly Package, SM Fiber, FC/APC
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SLD1550P-A22.5 mW SLD, CWL=1550 nm, 90 nm 3 dB BW, Butterfly Package, PM Fiber, FC/APC
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SLD1005S Support Documentation
SLD1005S22 mW SLD, CWL= 1550 nm, 50 nm 3 dB BW, Butterfly Package, SM Fiber, FC/APC
$1,926.17
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SLD1550S-A40 Support Documentation
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$2,180.47
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SLD1550P-A40 Support Documentation
SLD1550P-A40Customer Inspired! 40 mW SLD, CWL=1550 nm, 33 nm 3 dB BW, Butterfly Package, PM Fiber, FC/APC
$2,324.39
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