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InGaAs Avalanche Photodetectors


  • High-Speed Response up to 1 GHz
  • Ultra-High Sensitivity up to 0.9 × 106 V/W
  • Wavelength Range: 850 - 1650 nm or 900 - 1700 nm
  • Temperature-Compensated Versions Available

APD110C

APD310

APD130C

Temperature-Compensated APD

Related Items

Key Specificationsa
Item # APD110Cb APD130Cb APD310
Detector Type InGaAs APD
Wavelength Range 900 - 1700 nm 850 - 1650 nm
Active Area Diameter 0.2 mm 0.03 mm
Transimpedance Gain 100 kV/A with High Impedance Termination
50 kV/A with 50 Ω Termination
Variable
Max Conversion Gain 0.9 x 106 V/W 2.5 x 104 V/W
@ 1 GHz, 1500 nm
M Factor Temperature Stabilityc N/A ±2% (Typical);
±3% (Max)
N/A
Output Bandwidth (3 dB) DC - 50 MHz 1 - 1000 MHz
Minimum NEP (DC - 50 MHz) 0.46 pW/√Hz 0.4 pW/√Hz
  • For a complete list of specifications, please see the Specs tab.
  • Data are valid at 23 ± 2 °C (APD110C) or 23 ± 5 °C (APD130C) and 45% ± 15% relative humidity (non-condensing).
  • Within the 23 ± 5 °C temperature range.

Features

  • Noise Equivalent Powers (NEP) as Low as 0.4 pW/√Hz
  • Maximum Bandwidth: 50 MHz (APD110C or APD130C) or 1 GHz (APD310)
  • Temperature-Compensated Versions Provide M Factor Stability of ≤±3% Over 18 to 28 °C
  • Internal SM05 and External SM1 Threading for Lens Tubes
  • Power Supply Included

Thorlabs' InGaAs Avalanche photodetectors (APD) are designed to offer increased sensitivity and lower noise compared to standard PIN Detectors, making them ideal for applications with low optical power levels.

In general, avalanche photodiodes use an internal gain mechanism to increase sensitivity. A high reverse bias voltage is applied to the diodes to create a strong electric field. When an incident photon generates an electron-hole pair, the electric field accelerates the elections, leading to the production of secondary electrons by impact ionization. The resulting electron avalanche will produce a gain factor of several hundred times, described by a multiplication factor, M, that is a function of both the reverse bias voltage and temperature. In general, the M factor increases with lower temperatures and decreases with higher temperatures. Our temperature-compensated APDs feature an integrated thermistor that adjusts the bias voltage to compensate for the effect of temperature changes on the M factor. A comparison with our non-temperature-compensated APDs is provided in the graph below.

For extremely light-sensitive applications, Thorlabs offers Menlo Systems' APD310 high-sensitivity avalanche photodectector, which offers high-speed response up to 1 GHz.

Item #APD110CAPD130C
Detector Type InGaAs APD
Wavelength Range 900 - 1700 nm
Active Area Diameter 0.2 mm
Typical Max Responsivity 9 A/W @ 1500 nm (M = 10)a
Transimpedance Gain 50 kV/A with 50 Ω Terminationb
100 kV/A with High-Impedance Termination
Maximum Conversion Gain 0.9 x 106 V/W
Max Output Voltage Threshold 1.8 V with 50 Ω Termination
3.6 V with High-Impedance Termination
M Factor Temperature Stabilityc Not

±2% (Typical);
±3% (Max)
CW Saturation Power 4.2 µW
Max Input Powerd 1 mW
Output Bandwidth (3 dB) DC - 50 MHz
Minimum NEP (DC - 50 MHz) 0.46 pW/(Hz1/2)
Electrical Output 50 Ω BNC
DC Offset Electrical Output <±15 mV
Power Supply ±12 V @ 200 mA
(110/230 VAC, 50 - 60 Hz, Switchable)
General
Operating Temperature Rangec 0 to 40 °C (Non-Condensing)
Storage Temperature Range -40 to 70 °C
Dimensions 50.8 mm x 63.5 mm x 24.5 mm
(2.00" x 2.50" x 1.00")
  • These detectors are factory set to M = 10, but other M factors are available on request. Please contact techsupport@thorlabs.com for more information.
  • 50 Ω termination is recommended for the best performance.
  • Within the 23 ± 5 °C temperature range.
  • This value is the damage threshold for the photodiode.
All technical data are valid at 23 ± 2 °C (APD110C) or 23 ± 5 °C (APD130C) and 45% ± 15% relative humidity (non-condensing).
Item #APD310
Detector Type InGaAs APD
Wavelength Range 850 - 1650 nm
Gain (Max)a 2.5 x 104 V/W @ 1 GHz, 1500 nm
Optical Input Free Spaceb
Detector Diameter 0.03 mm
Current Consumption 200 mA
Incident Power (Max) 10 mW
Frequency Range (Max) 1 MHz - 1800 MHz
3 dB Bandwidth 5 MHz - 1000 MHz
NEP (calculated)c 2 pW/(Hz1/2)
Rise Timed 500 ps
Dark State Noise Levele -80 dBm
Electrical Output BNC, 50 Ω
Output Coupling AC
Device Dimensions 2.4" x 2.2" x 1.87"
60 mm x 56 mm x 47.5 mm
Supply Voltage 12 - 15 Vf
Operating Temperature 10 - 40°C
  • Gain Adjustable via Push Buttons
  • With adapter for Thorlabs' SM05 Mount
  • The noise-equivalent power is a measure of the detector's minimum detectable power per square root of bandwidth. Since this value only depends on the detector itself, it can be used to compare two detectors that do not have the same integration time. The smaller the NEP value, the better the detector.
  • Specified at peak reponsivity wavelength; rise time may vary with wavelength.
  • This is a measure of the noise when no light is incident on the detector's photosensitive area. Span: 5 MHz, Resolution Bandwidth: 3 kHz
  • Power supply included with adapters for EU/USA. Please contact us to request a different adapter.

Typical Responsivity of the APD110C and APD130C Photodetectors

APD110C and APD130C Responsivity
Click to Enlarge

Pulse Response of the APD310 Photodetector

Pulse Train for APD310

BNC Female Output (Photodetector)

BNC Female

0 - 10 V Output

APD Male (Power Cables)

Pinout for PDA Power Cable

APD Female (Photodetector)

Pinout for PDA Power Connector

Click the Support Documentation icon document icon or Part Number below to view the available support documentation
Part NumberProduct Description
APD110C Support Documentation APD110C:Avalanche Photodetector, InGaAs, 900 - 1700 nm, 8-32 Taps
APD110C/M Support Documentation APD110C/M:Avalanche Photodetector, InGaAs, 900 - 1700 nm, M4 Taps
APD130C Support Documentation APD130C:Avalanche Photodetector, Temperature Compensated, InGaAs, 8-32 Taps
Part NumberProduct Description
APD130C/M Support Documentation APD130C/M:Avalanche Photodetector, Temperature Compensated, InGaAs, 900 - 1700 nm, M4 Taps
APD310 Support Documentation APD310:High-Speed Avalanche Detector, InGaAs, 850 - 1650 nm
LDS1212 Support Documentation LDS1212:±12 VDC Regulated Linear Power Supply, 6 W, 115/230 VAC

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Posted Comments:
Poster:shallwig
Posted Date:2015-01-30 11:51:05.0
This is a response from Stefan at Thorlabs. Thank you very much for your valuable feedback. Our web team will change the related items shown on the right side accordingly your suggestions. I will contact you directly to check if there is anything else we can help you with.
Poster:peupel
Posted Date:2015-01-30 15:23:31.92
Dear web team, It would be nice having a direct link to the complete fiber coupling assembly (shown on the right side of product page) rather than several links to general product categories, or at least a list with suggested part number. This would help saving time to order the fiber coupling assembly. Thanks - Jens
Poster:shallwig
Posted Date:2014-06-19 05:55:07.0
This is a response from Stefan at Thorlabs. Thank you very much for your inquiry. With the responsivity R(?) for a given wavelength you can estimate the OUTPUT voltage of the APD110C Avalanche Photodetector. The OUTPUT voltage is a function of incident light power POPT, detectors responsivity R(?), multiplication factor M and transimpedance gain G given by: Vout =POPT *R( ?)*M*G The M-factor of APD110C is factory set to 10 at 23°C ambient temperature. The amplifier’s transimpedance gain G is 100.000 V/A for all Models APD110C. Further information can also be found in the manual on page 8 which you can find here: http://www.thorlabs.de/thorcat/19500/APD110C-Manual.pdf I will contact you directly to discuss your application in detail.
Poster:tschalk
Posted Date:2014-06-06 04:37:05.0
This is a response from Stefan at Thorlabs. Thank you very much for your inquiry. We specify a maximum input power of 1mW for the APD110C. This value is the damage threshold for the photodiode, you can find this information in the spec sheet on our website here: http://www.thorlabs.com/newgrouppage9.cfm?objectgroup_id=4047 With your pulse parameters this detector is not suitable. The bandwidth of the detector is from DC-50MHz so the repetition rate of your source (10Hz) is no problem. But, the detector would not work linearly for such short pulses (6ns) and the pulses cannot be properly time resolved. I will contact you directly to discuss your application in detail and which alternative detector might fit better.
Poster:egregorio
Posted Date:2014-06-05 01:19:11.443
Dear Thorlabs, I have an APD110C/M InGaAs Avalanche Photodetector. I want to use it for the mesurement of a 1534 nm pulsed laser with 3 mJ (peak pulse), 6 ns (pulse length) at 10 Hz. I need a neutral filter in order to avoid damage to the photodetector. In order to select it, could you indicate me what is the maximum optical input (damage threshold) for a 6ns pulse or similar. What is the saturation input for a 6ns pulse or similar? Thank you.
Poster:shikin
Posted Date:2014-05-30 09:18:44.32
Hi! How to use diode responsivity graph for correction of results?
Poster:cdaly
Posted Date:2013-07-25 10:45:00.0
Response from Chris at Thorlabs: Thank you for your feedback. The APD310 and PFD310 are each detectors in their own right. If your beam is a bit too large for the APD310 detector, I would suggest focusing it down with an optic, which can be mounted via the SM05 threading on the front. Focusing down to this 30um detector size should be much easier than coupling into the single mode fiber of the FPD310.
Poster:sys2643
Posted Date:2013-07-23 09:11:46.75
Hello I bought the APD301 Photodetector from your web site. But I have one problem when I had an experiment. The problem is that the sensing area of APD301 is very small. In our experiment, Now, we use 1520nm laser that has a bigger beam size than the sensing area of APD301. So, To solve this problem, I'm trying to find another product that can connect to APD301 such as FPD310 or LENS Tube System. So, Is it possible to use FPD310 system or lens tube system? I'm not sure that it is possible to connect FPD310 or lens tube system to APD310. If not, Do i use another optic system or product? so if you know methods of products to reduce beam spot size or increase the sensing size of detector using APD310. please let me know the method or product. thank you.
Poster:weinberg.d.j
Posted Date:2013-03-27 11:10:20.347
Do you have any application notes on using APD110C or APD310 for time correlated single photon counting? My research group would like to look at NIR emission with a decay lifetime of approximately 2 microseconds, but I am not sure if the gain on these APDs will be sufficient. If necessary, we could use a boxcar integrator and collect the voltage output from the APD.
Poster:tschalk
Posted Date:2013-04-19 05:16:00.0
This is a response from Thomas at Thorlabs. Thank you very much for your inquiry. Unfortunately we do not provide any application notes for our avalanche Photodetectors. Basically the APDs are not suited for single photon measurements, however we do offer single photon counters (http://www.thorlabs.com/newgrouppage9.cfm?objectgroup_id=5255). I will contact you directly to discuss your application and to find out if the detector is suitable for your needs.
Poster:jvigroux
Posted Date:2012-10-04 13:20:00.0
A response from Julien at Thorlabs: Thank you for your inquiry. The rise time of this detector is about 10ns.
Poster:natalie.haustrup
Posted Date:2012-10-04 07:44:41.0
Could you please tell me what the rise time of this detector is?
Poster:jvigroux
Posted Date:2012-01-25 16:54:00.0
A response form Julien at Thorlabs: Thank you for your inquiry. The M factor can be assimilated to the gain of the detector. The higher the M factor, the higher the gain will be. The statement recommending not using a cell phone within less than 3 meters from the detector is based on a "worst case" scenario. The actual distance within which the power emitted by a mobile phone might be a problem will of course also depends on magnitude of your measurement signal. IF you have any furtehr question, please do not hesitate to contact us at techsupport@thorlabs.com
Poster:
Posted Date:2012-01-24 21:11:22.0
Hi, the APD manual says that different M-factors can be requested. What are the implications of a different M-factor (e.g. M=100) on the performance? Also, the manual states that mobile phones are not allowed within 3 meters (!) of the APD. Is this really required? Thank you.
Poster:jvigroux
Posted Date:2011-12-12 07:20:00.0
A response form Julien at Thorlabs: The bandwidth of the APD110 series can be limited to 10kHz if required. I will contact you directly to discuss the details of your request.
Poster:
Posted Date:2011-12-09 13:20:09.0
A response from Tyler at Thorlabs: Thank you for sending us your custom request. I have contacted an application engineer who will work with our production engineers for the product line to see if we can offer a custom detector to meet your needs.
Poster:alsturl
Posted Date:2011-12-08 15:35:06.0
I have a picosecond laser signal @5kHz which, after the photodetector, I digitize at 256kHz. Would it be possible to get a custom APD110A with a bandwidth of 10kHz so that the detector isn't faster than the digitizer? And without reducing the NEP or the output voltage into a Hi-Z? Your PDA100A is what I have been using, but I really could use more sensitivity. Thanks! -Adam
Poster:jjurado
Posted Date:2011-03-15 18:10:00.0
Response from Javier at Thorlabs to Alex: Thank you for contacting us with your request. A couple of PDA series amplified photodiode detectors are most likely the best best fit for your application. A regular biased DET detector may not be sensitive enough. Also, the APD210/310 avalanche detectors are AC coupled, and, along with the APD110 series detectors, they have a low saturation power (in the order of a few microwatts). Below is a link for these detectors: http://www.thorlabs.com/NewGroupPage9.cfm?ObjectGroup_ID=4 I will contact you directly to get a better assessment of your application.
Poster:alekkom
Posted Date:2011-03-15 21:29:27.0
Hi! I measure weak light signals of thin optical fiber (2-5 microns core diameter). Wavelengths are 300-1800 nm, light sources are deiterium or galogen lamps. Now I want to change my old detectors. What series of detectors (NON fiber-coupled!!!)are more appropriate for my field? DET, APD210(310) or APD 110 series.... Great thanks! Alex
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InGaAs Avalanche Photodetectors

Application Idea: Fiber Coupling

APD110C with a fiber collimator, lens tube, lens tube collimator adapter, and X-Y translation mount. An adapter inside the lens tube holds an aspheric lens (not visible) to focus the collimated light onto the 0.2 mm active area of the detector. The X-Y translation mount corrects for any centering issues.

Components Shown
APD110C
LM1XY
SM1L10
Fiber Collimator
(Dependent on Fiber)
AD11F or AD12F
(Dependent on Collimator)
Mounted Molded Aspheric Lens
(Dependent on Collimator)
S1TM06, S1TM08, S1TM09, S1TM10, or S1TM12
(Dependent on Lens)

The APD110C Avalanche Photodetector combines an InGaAs avalanche photodiode with a specially designed amplifier that includes an active low-pass filter to suppress out-of-band noise effectively. These avalanche photodetectors are designed to detect light in the 900 - 1700 nm range. Their low NEP and high transimpedance gain, as seen in the table above, makes them ideal for fast low-light-level detection applications, such as spectroscopy, fluorescence measurements, lidar (laser radar), and optical range finders. Although the APD110C module is very sensitive to light, it will not saturate in ambient light. See the Specs tab for a graph of the detector responsivity.

The detector has a compact housing measuring just 2.0" x 2.5" x 1" (50.8 mm x 63.5 mm x 24.5 mm). The output and power leads to the detector come in perpendicular to the light path. An 8-32 (M4) tapped hole, provided on three sides of the detector, allows post mounting with the leads pointing left, right, or upward. Also, internal SM05 (0.535”-40) and external SM1 (1.035”-40) threads are concentric with the avalanche photodiode, which allows the user to mount lens tubes, fiber adapters, or other SM1- and SM05-compatible components directly to the detector housing. An internally SM1-threaded cap is included.

Fiber Coupling Note:
For fiber-coupled applications, we do not recommended using fiber connector adapters like Thorlabs' S120-FC or SM1xx due to the small size of the detector. High coupling losses and degradation of the frequency response may occur. To achieve high coupling efficiency, a fiber collimation package, focusing lens, and X-Y translator should be used, as shown in the photo to the right.

Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal/Imperial Price Available / Ships
APD110C Support Documentation
APD110CAvalanche Photodetector, InGaAs, 900 - 1700 nm, 8-32 Taps
$2,150.00
Today
+1 Qty Docs Part Number - Metric Price Available / Ships
APD110C/M Support Documentation
APD110C/MAvalanche Photodetector, InGaAs, 900 - 1700 nm, M4 Taps
$2,150.00
Today

Temperature-Compensated InGaAs Avalanche Photodetectors

APD Temperature Stability
Click to Enlarge

The above plot shows sample data comparing the M factor stability of our temperature-compensated avalanche photodetectors to our standard packages. The blue shaded region indicates the temperature range over which the M factor stability is guaranteed to within ±3%.
  • Temperature Compensated to Provide M Factor Stability of ≤±3%
    Over 18 to 28 °C
  • Internal SM05 and External SM1 Threads Accept Fiber Adapters,
    Lens Tubes, and Other Components
  • SM1CP1 Internally SM1-Threaded Cap Included

The APD130C Temperature-Compensated Avalanche Photodetector combines an InGaAs avalanche photodiode with a specially designed amplifier that includes an active low-pass filter to suppress out-of-band noise effectively. These devices feature an integrated thermistor that maintains M factor stability no greater than ±3% over 23 ± 5 °C by adjusting the bias voltage across the avalanche photodiode. 

These avalanche photodetectors are designed to detect light in the 900 - 1700 nm range. Their low NEP and high transimpedance gain, as see in the table above, makes them ideal for fast low-light-level detection applications, such as spectroscopy, fluorescence measurements, lidar (laser radar), and optical range finders. Although the APD130C module is very sensitive to light, it will not saturate in ambient light. See the Specs tab for a graph of the detector responsivity.

The detector has a compact housing measuring just 50.8 mm x 63.5 mm x 24.5 mm (2.0" x 2.5" x 1"). The output and power leads to the detector come in perpendicular to the light path. An 8-32 (M4) tapped hole, provided on three sides of the detector, allows post mounting with the leads pointing left, right, or upward. Also, internal SM05 (0.535”-40) and external SM1 (1.035”-40) threads are concentric with the avalanche photodiode, which allows the user to mount lens tubes, fiber adapters, or other SM1- and SM05-compatible components directly to the detector housing. An internally SM1-threaded cap is included.

Fiber Coupling Note:
For fiber-coupled applications, we do not recommended using fiber connector adapters like Thorlabs' S120-FC or SM1xx due to the small size of the detector. High coupling losses and degradation of the frequency response may occur. To achieve high coupling efficiency, a fiber collimation package, focusing lens, and X-Y translator should be used, as shown in the photo above.

Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal/Imperial Price Available / Ships
APD130C Support Documentation
APD130CAvalanche Photodetector, Temperature Compensated, InGaAs, 8-32 Taps
$2,200.00
Today
+1 Qty Docs Part Number - Metric Price Available / Ships
APD130C/M Support Documentation
APD130C/MAvalanche Photodetector, Temperature Compensated, InGaAs, 900 - 1700 nm, M4 Taps
$2,200.00
Today

InGaAs High-Speed Avalanche Photodetectors

  • High-Speed Avalanche Photodetector up to 1 GHz
  • Internal SM05 (0.535"-40) Threads for Lens Tube Integration
  • 100 Step Adjustable Gain

Menlo Systems' APD310 InGaAs Avalanche Photodetector provides an extremely light-sensitive alternative to traditional PIN photodiodes and is sensitive and fast enough for the characterization of pulsed lasers on the order of nanoseconds. The InGaAs avalanche photodiode of the APD310 provides exceptional performance for low-light applications in the 850 - 1650 nm. This APD maintains high-gain stability over the operating temperature range by utilizing a temperature-compensation circuit, which adjusts the ~150 VDC bias to ensure operation near the breakdown voltage.

A 40 dB gain amplifier is integrated into the package and is AC-coupled to band the output BNC. The output is matched to 50 Ω impedance. The detector has an electronic width of 1 MHz to 1 GHz and offers user-accessible push buttons providing 100 step gain adjustment. The APD310 has SM05 (0.535"-40) threads for easy integration into Thorlabs' entire family of lens tubes and cage assemblies. The bottom of the detector has a metric (M4) mounting hole and an M4 to 8-32 adapter for post mounting. The compact packaging allows the APD to be substituted directly into an existing setup while maintaining a small footprint on the benchtop. A location-specific power adapter is included with the detector; contact tech support for more information.

These photodetectors are not suitable for pulses longer than 30 ns or continuous light levels. Please see the FPD510 series for alternatives.

Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal/Imperial Price Available / Ships
APD310 Support Documentation
APD310High-Speed Avalanche Detector, InGaAs, 850 - 1650 nm
$2,320.00
Today

12 VDC Regulated Power Supply

  • Replacement Power Supply for the Avalanche Photodetectors Sold Above
  • ±12 VDC Power Output
  • Current Limit Enabling Short Circuit and Overload Protection
  • On/Off Switch with LED Indicator
  • Switchable AC Input Voltage (115 or 230 VAC)
  • 6.6 ft (2 m) Cable with LUMBERG RSMV3-657/2M Male Connector
  • UL and CE Compliant

The LDS1212 ±12 VDC Regulated Linear Power Supply is intended as a replacement for the supply included with our APD series of avalanche photodetectors sold on this page. The cord has three pins: one for ground, one for +12 V, and one for -12 V (see diagram above). This power supply ships with a location-specific power cord and the voltage switch is set to the proper setting for your location before it is shipped. This power supply can also be used with our PDA series of amplified photodetectors, our PDB series of balanced photodetectors, our PMM series of photomultiplier modules, and our dichroic atomic vapor spectroscopy systems.

Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal/Imperial Price Available / Ships
LDS1212 Support Documentation
LDS1212NEW!±12 VDC Regulated Linear Power Supply, 6 W, 115/230 VAC
$56.00
Today
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