Temperature-Compensated InGaAs Avalanche Photodetectors

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
Power Supply Included

Thorlabs’ APD130C(/M) Avalanche Photodetector features an integrated thermistor that maintains an M factor stability of ±3% or better over 23 ± 5 °C by adjusting the bias voltage across the avalanche photodiode, supplying improved output stability in environments with temperature variations.

The orientation of the mechanical and electrical connections, combined with the compact design, ensures that these detectors can fit into tight spaces. Three 8-32 (M4) mounting holes, one on each edge of the housing, further ensure easy integration into complicated mechanical setups. The housing also provides compatibility with both our SM05 and SM1 Lens Tubes. An internally SM1-threaded cap is included.

Fiber Coupling Note:
For fiber-coupled applications, we do not recommend using fiber connector adapters such as Thorlabs’ S120-FC 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. See the Fiber Coupling tab for details.

Key Specifications^a
Item #	APD130C(/M)
Detector Type	InGaAs APD
Wavelength Range	900 – 1700 nm
Output Bandwidth (3 dB)	DC – 50 MHz
Active Area Diameter	0.2 mm
Typical Max Responsivity	9 A/W @ 1500 nm (M = 10)
Responsivity Graph (Click to View)
Transimpedance Gain	50 kV/A (50 Ω Termination) 100 kV/A (High-Z Termination)
Max Conversion Gain^b	0.9 × 10⁶ V/W
M Factor	10
M Factor Temperature Stability^c	±2% (Typical); ±3% (Max)
Saturation Power (CW)	4.2 µW
Minimum NEP (DC – 50 MHz)^d	0.46 pW/√Hz
Dimensions (W x H x D)	2.97″ x 2.00″ x 1.08″

For a complete list of specifications and responsivity graphs, please see the APDxxxC Specs tab. Data are valid at 23 ± 5 °C and 45% ± 15% relative humidity (non-condensing).
At the Peak Responsivity Wavelength
Within the 23 ± 5 °C temperature range.
For more information on how NEP is calculated, please see Thorlabs’ Noise Equivalent Power White Paper.