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

Please Wait

Overview
Specs
Spectral Comparison
Pin Diagram
Selection Guide
Feedback

Recommended Controller / Mount Options
Item #	Mount	Diode Driver	TEC Controller
CLD1015
LM14S2		-	-
ITC4000 Series	Use with LM14S2 Mount
LDC200 Series	Use with LM14S2 Mount		-
TED200C	Use with LM14S2 Mount	-

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
X_i is the Wavelength of a Trace Data Point
Y_i 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
X_{R_3dB} is the Right Wavelength Edge of the 3 dB Bandwidth
X_{L_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
Parameter^a	Min	Typ.	Max
Operating Current	-	-	170 mA
Center Wavelength^b	760 nm	770 nm	780 nm
Spectral Shape	Near Gaussian
ASE Power^c	4.5 mW	5.5 mW	-
Optical 3 dB Bandwidth^c,d	15 nm	18 nm	-
RMS Gain Ripple^c	-	0.01 dB	0.3 dB
Forward Voltage^c	-	1.95 V	2.5 V
Fiber Type	780HP (SM)
TEC Operation: Typ. / Max @ T_CASE = 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 Ripple^c,e
Absolute Maximum Ratings^a
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
Parameter^a	Min	Typical	Max
Operating Current	-	-	270 mA
Center Wavelength^b	795 nm	810 nm	825 nm
Spectral Shape	Near Gaussian
ASE Power^c	13 mW	15 mW	-
Optical 3 dB Bandwidth^c,d	25 nm	30 nm	-
RMS Gain Ripple^c	-	0.03 dB	0.15 dB
Forward Voltage	-	2.1 V	2.5 V
Fiber	780HP (SM)
TEC Operation: Typ. / Max @ T_CASE = 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
LIV Plot
Gain Ripple^c,e
Absolute Maximum Ratings^a
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
Parameter^a	Min	Typical	Max	Min	Typical	Max	Min	Typical	Max	Min	Typical	Max
Operating Current	-	-	240 mA	-	-	330 mA	-	-	150 mA	-	-	240 mA
Center Wavelength^b	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 Power^c,d	10 mW	-	-	20 mW	-	-	10 mW	13 mW	-	20 mW	22 mW	-
Optical 3 dB Bandwidth^c,e	50 nm	60 nm	-	40 nm	55 nm	-	17 nm	20 nm	-	17 nm	20 nm	-
Optical 20 dB Bandwidth^c	-	-	-	-	-	-	-	50 nm	-	-	50 nm	-
RMS Gain Ripple^c,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 @ T_CASE = 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
LIV Plot
Gain Ripple^f
Absolute Maximum Ratings^a
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
Parameter^a	Min	Typical	Max	Min	Typical	Max
Operating Current	-	-	180 mA	-	-	340 mA
Center Wavelength^b	835 nm	850 nm	865 nm	835 nm	850 nm	865 nm
Spectral Shape	Flat Top			Flat Top
ASE Power^c,d	10 mW	-	-	20 mW	-	-
Optical 3 dB Bandwidth^c,e	40 nm	60 nm	-	40 nm	55 nm	-
RMS Gain Ripple^c,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 @ T_CASE = 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 Ripple^f
Absolute Maximum Ratings^a
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
Parameter^a	Min	Typical	Max	Min	Typical	Max
Operating Current	-	-	225 mA	-	-	410 mA
Center Wavelength^b	860 nm	880 nm	900 nm	860 nm	880 nm	900 nm
Spectral Shape	Flat Top			Flat Top
ASE Power^c,d	6 mW	7 mW	-	23 mW	25 mW	-
Optical 3 dB Bandwidth^c	35 nm	40 nm	-	35 nm	40 nm	-
Optical 20 dB Bandwidth^c	-	80 nm	-	-	80 nm	-
RMS Gain Ripple^c,e	-	0.06 dB	0.3 dB	-	0.06 dB	0.3 dB
Forward Voltage^c	-	2.0 V	2.5 V	-	2.0 V	2.5 V
Fiber Type	780HP			780HP
TEC Operation: Typ. / Max @ T_CASE = 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
LIV Plot
Gain Ripple^e
Absolute Maximum Ratings^a
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
Parameter^a	Min	Typical	Max
Operating Current	-	-	420 mA
Center Wavelength^b	895 nm	920 nm	945 nm
Spectral Shape	Flat Top
ASE Power^c,d	10 mW	15 mW	-
Optical 3 dB Bandwidth^c,e	50 nm	65 nm	-
RMS Gain Ripple^c,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 @ T_CASE = 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
LIV Plot
Gain Ripple^e
Absolute Maximum Ratings^a
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

Parameter^a

Min

Typical

Max

Operating Current

800 mA

Center Wavelength^b

915 nm

930 nm

945 nm

Spectral Shape

Flat Top

ASE Power^c,d

36 mW

40 mW

Optical 3 dB Bandwidth^c,e

40 nm

45 nm

RMS Gain Ripple^c,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 @ T_CASE = 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

LIV Plot

Gain Ripple^f

Absolute Maximum Ratings^a

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
Parameter^a	Min	Typical	Max
Operating Current	-	1000 mA	1010 mA
Center Wavelength^b	945 nm	970 nm	995 nm
Spectral Shape	Flat Top
ASE Power^c,d	35 mW	40 mW	-
Optical 3 dB Bandwidth^c,e	40 nm	50 nm	-
RMS Gain Ripple^c,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 @ T_CASE = 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 Ripple^f
Absolute Maximum Ratings^a
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

Parameter^a

Min

Typical

Max

Min

Typical

Max

Min

Typical

Max

Operating Current

300 mA

1010 mA

Center Wavelength^b

1030 nm

1050 nm

1070 nm

1025 nm

1050 nm

1075 nm

1025 nm

1050 nm

1075 nm

Spectral Shape

Near Gaussian

Flat Top

ASE Power^c,d

6 mW

8 mW

55 mW

60 mW

55 mW

60 mW

Optical 3 dB Bandwidth^c,e

40 nm

50 nm

60 nm

70 nm

60 nm

70 nm

Optical 20 dB Bandwidth^c

100 nm

RMS Gain Ripple^c,f

0.1 dB

0.25 dB

0.03 dB

0.2 dB

0.06 dB

0.3 dB

Forward Voltage^c

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-XP^g

TEC Operation: Typ. / Max @ T_CASE = 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

Performance Graphs (Click Icons for Plots)

Output Spectrum

LIV Plot

Gain Ripple^f

Absolute Maximum Ratings^a

Absolute Max Current

360 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
Parameter^a	Min	Typical	Max	Min	Typical	Max
Operating Current	-	700 mA	900 mA	-	600 mA	800 mA
Center Wavelength^b	1290 nm	-	1330 nm	1290 nm	-	1330 nm
Spectral Shape	Near Gaussian			Near Gaussian
ASE Power^c,d	10 mW	12.5 mW	-	22 mW	30 mW	-
Optical 3 dB Bandwidth^c	80 nm	85 nm	-	40 nm	45 nm	-
RMS Gain Ripple^c,e	-	-	0.35 dB	-	0.1 dB	0.35 dB
Forward Voltage^c	-	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 @ T_CASE = 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
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.
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
Parameter^a	Min	Typical	Max
Operating Current	-	-	780 mA
Center Wavelength^b	-	1325 nm	-
Spectral Shape	Flat Top
ASE Power^c	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 Resistance^d	-	-	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

Parameter^a

Min

Typical

Max

Operating Current

500 mA

600 mA

Center Wavelength^b

1435 nm

1450 nm

1465 nm

Spectral Shape

Near Gaussian

ASE Power^c,d

23 mW

25 mW

Optical 3 dB Bandwidth^c,e

50 nm

54 nm

RMS Gain Ripple^c,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 @ T_CASE = 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

LIV Plot

Gain Ripple^f

Absolute Maximum Ratings^a

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
Parameter^a	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 Wavelength^b	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 Power^c,d	0.75 mW	1.0 mW	-	2.0 mW	2.5 mW	-	20 mW	22 mW	-	35 mW	40 mW	-
Optical 3 dB Bandwidth^c	100 nm	110 nm	-	85 nm	90 nm	-	45 nm	50 nm	-	30 nm	33 nm	-
RMS Gain Ripple^c,e	-	-	0.1 dB	-	-	0.25 dB	-	0.2 dB	0.35 dB	-	0.2 dB	0.35 dB
Forward Voltage^c	-	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 @ T_CASE = 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
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.
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.

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	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 Power^a	Bandwidth (3 dB)	Equivalent Benchtop Source
SLD405B	405 nm	Butterfly, SM Pigtail	5 mW	3 nm	N/A
SLD450B	450 nm	Butterfly, SM Pigtail	5 mW	6 nm	N/A
SLD450T	450 nm	TO-56	10 mW	5 nm	N/A
SLD510B	510 nm	Butterfly, SM Pigtail	1.5 mW	8 nm	N/A
SLD635B	635 nm	Butterfly, SM Pigtail	3 mW	6 nm	N/A
SLD635T	635 nm	TO-56	10 mW	5 nm	N/A
SLD650B	650 nm	Butterfly, SM Pigtail	3 mW	6 nm	N/A
SLD650T	650 nm	TO-56	10 mW	5 nm	N/A
SLD770S	770 nm^c	Butterfly, SM Pigtail	5.5 mW	18 nm	N/A
SLD810S	810 nm^c	Butterfly, SM Pigtail	15 mW	30 nm	N/A
SLD830S-A10W	830 nm^c	Butterfly, SM Pigtail	10 mW (Min)	60 nm	N/A
SLD830S-A20W	830 nm^c	Butterfly, SM Pigtail	20 mW (Min)	55 nm	N/A
SLD830S-A10	830 nm^c	Butterfly, SM Pigtail	13 mW	20 nm	N/A
SLD830S-A20	830 nm^c	Butterfly, SM Pigtail	22 mW	20 nm	N/A
SLD850S-A10W	850 nm^c	Butterfly, SM Pigtail	10 mW (Min)	60 nm	N/A
SLD850S-A20W	850 nm^c	Butterfly, SM Pigtail	20 mW (Min)	55 nm	N/A
SLD880S-A7	880 nm^c	Butterfly, SM Pigtail	7 mW	40 nm	N/A
SLD880S-A25	880 nm^c	Butterfly, SM Pigtail	25 mW	40 nm	N/A
SLD920S	920 nm^c	Butterfly, SM Pigtail	15 mW	65 nm	N/A
SLD920P	920 nm^c	Butterfly, PM Pigtail	15 mW	65 nm	N/A
SLD930S-A40W	930 nm^c	Butterfly, SM Pigtail	40 mW	45 nm	N/A
SLD930P-A40W	930 nm^c	Butterfly, PM Pigtail	40 mW	45 nm	N/A
SLD970S-A40W	970 nm^c	Butterfly, SM Pigtail	40 mW	50 nm	N/A
SLD970P-A40W	970 nm^c	Butterfly, PM Pigtail	40 mW	50 nm	N/A
SLD1050S	1050 nm^c	Butterfly, SM Pigtail	8 mW	50 nm	N/A
SLD1050P	1050 nm^c	Butterfly, PM Pigtail	8 mW	50 nm	N/A
SLD1050S-A60	1050 nm^c	Butterfly, SM Pigtail	60 mW	70 nm	N/A
SLD1050P-A60	1050 nm^c	Butterfly, PM Pigtail	60 mW	70 nm	N/A
SLD1021S	1310 nm^c	Butterfly, SM Pigtail	12.5 mW	85 nm	S5FC1021S
SLD1018S	1310 nm^c	Butterfly, SM Pigtail	30 mW	45 nm	S5FC1018S S5FC1018P
SLD1018P	1310 nm^c	Butterfly, PM Pigtail	30 mW	45 nm	S5FC1018S S5FC1018P
SLD1325	1325 nm^c	Butterfly, SM Pigtail	10 mW (Min)	100 nm (Min)	N/A
SLD1450S	1450 nm^c	Butterfly, SM Pigtail	25 mW	54 nm	N/A
SLD1450P	1450 nm^c	Butterfly, PM Pigtail	25 mW	54 nm	N/A
SLD1550S-A1	1550 nm^c	Butterfly, SM Pigtail	1.0 mW	110 nm	N/A
SLD1550P-A1	1550 nm^c	Butterfly, PM Pigtail	1.0 mW	110 nm	N/A
SLD1550S-A2	1550 nm^c	Butterfly, SM Pigtail	2.5 mW	90 nm	S5FC1550S-A2 S5FC1550P-A2
SLD1550P-A2	1550 nm^c	Butterfly, PM Pigtail	2.5 mW	90 nm	S5FC1550S-A2 S5FC1550P-A2
SLD1005S	1550 nm^c	Butterfly, SM Pigtail	22 mW	50 nm	S5FC1005S
SLD1550S-A40	1550 nm^c	Butterfly, SM Pigtail	40 mW	33 nm	N/A
SLD1550P-A40	1550 nm^c	Butterfly, PM Pigtail	40 mW	33 nm	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:

Prashant Vadgaonkar (posted 2022-07-12 02:29:30.273)

Does the SLD830S-A10W emits the light with polarization within fiber? Do we need "polarization scrambler" in the path?

jgreschler (posted 2022-07-15 09:31:43.0)

Thank you for reaching out to Thorlabs. The SLD chip output is polarized, however the emission of the single mode fiber is going to depend on temperature and stress on the fiber. You can control these factors and the polarization state using a paddle controller to obtain your desired output polarization state.

Prashant Vadgaonkar (posted 2022-07-07 10:48:37.157)

Hello! I try to use SLD830S-A10W with driver CLD1015. We should check whether the Steinhart-Hart A,B and C of SLD is right. So, we want to know the SHH A,B and C values of SLD830S-A10W as they are not mentioned in the Spec Sheet Could you let me know?

jdelia (posted 2022-07-08 01:59:24.0)

Thank you for contacting Thorlabs. The Steinhart Coefficients are as follows: A: 1.129241E-03; B: 2.341077E-04; C: 8.775468E-08

Pierre Senée (posted 2022-03-07 08:59:56.137)

Dear Sir or Madam, I am using the SLD850S-A20W for research purposes in microscopy. The 850 nm beam from the source is injected in my system with a P3-780A-FC-1 fiber. I recently incorporated the BST17 beamsplitter in my system and I have the following issue : When the fiber is moved (even very slightly) the transmitted power through the beamsplitter varies. I believe this is due to the polarisation of the light which varies with the bending and coiling of the fiber. (the transmission coefficient of the beamsplitter varies quite a lot with the polarization). This is quite a big issue for my system as I would like a steady transmitted intensity. Would you know if an easy solution for this issue exist ? Best regards, Pierre Senée

cdolbashian (posted 2022-03-15 09:36:33.0)

Thank you for reaching out to us Pierre. In troubleshooting cases like this, it is very important to consider all potential sources of noise and instability in your system. To begin something like this, it is helpful to remove each component in your experimental setup and verify which element is the source of the instability. I have reached out to you with some additional troubleshooting steps and look forward to hearing from you soon.

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

Zoom

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 Wavelength^b	760 nm	770 nm	780 nm
Spectral Shape	Near Gaussian
ASE Power^c	4.5 mW	5.5 mW	-
Optical 3 dB Bandwidth^c,d	15 nm	18 nm	-
RMS Gain Ripple^c,e	-	0.01 dB	0.3 dB
Fiber Type	780HP
Performance Graphs (Click Icons for Plots)
Output Spectrum
LIV Plot
Gain Ripple^e

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

810 nm Superluminescent Diodes

Zoom

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 Wavelength^b	795 nm	810 nm	825 nm
Spectral Shape	Near Gaussian
ASE Power^c	13 mW	15 mW	-
Optical 3 dB Bandwidth^c,d	25 nm	30 nm	-
RMS Gain Ripple^c,e	-	0.03 dB	0.15 dB
Fiber Type	780HP
Performance Graphs (Click Icons for Plots)
Output Spectrum
LIV Plot
Gain Ripple^e

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

830 nm Superluminescent Diodes

Zoom

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
LIV Plot
Gain Ripple^f

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

850 nm Superluminescent Diodes

Zoom

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 Ripple^f

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

880 nm Superluminescent Diodes

Zoom

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
Parameter^a	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
LIV Plot
Gain Ripple^e

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

920 nm Superluminescent Diodes

Zoom

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
LIV Plot
Gain Ripple^e

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.

930 nm Superluminescent Diodes

Zoom

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

Optical 3 dB Bandwidth (nm)^c

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

LIV Plot

Gain Ripple^e

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.

970 nm Superluminescent Diodes

Zoom

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 Ripple^f

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.

1050 nm Superluminescent Diodes

Zoom

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-XP^g			HI1060			PM980-XP^g
Performance Graphs (Click Icons for Plots)
Output Spectrum
LIV Plot
Gain Ripple^f	-			-

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.

1310 nm Superluminescent Diodes

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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
LIV Plot

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.

1325 nm Superluminescent Diode

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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.

1450 nm Superluminescent Diodes

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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

Optical 3 dB Bandwidth (nm)^c

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

LIV Plot

Gain Ripple^e

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

1550 nm Superluminescent Diodes

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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
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.
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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+1 Qty Docs Part Number - Universal Price Available

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SLD1005S 22 mW SLD, CWL= 1550 nm, 50 nm 3 dB BW, Butterfly Package, SM Fiber, FC/APC

$1,974.32

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SLD1550P-A40 Customer Inspired! 40 mW SLD, CWL=1550 nm, 33 nm 3 dB BW, Butterfly Package, PM Fiber, FC/APC

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