InGaAs Single-Photon Detector Series
High-temperature InGaAs/InP Geiger-mode avalanche photodiodes (GM-APDs) are specialized devices designed for single-photon detection and counting in the short-wave infrared (SWIR) spectrum. Optimized specifically for single-photon detection at temperatures of 0°C and above, these detectors significantly reduce cooling requirements while meeting the technical demands for high-efficiency, low-dark-count single-photon detection in fields such as quantum secure communication and low-light sensing. They enable single-photon detection across the 0.9–1.7 μm wavelength range, facilitating the miniaturization of equipment and ensuring reliable operation under diverse environmental conditions.
- Features:
- ◎ Back-illuminated design; available in various package types and dimensions, including 3-pin TO46 (uncooled) as well as 6-pin TO8 and 10-pin mini-butterfly (TEC-cooled) configurations; equipped with FC/PC single-mode fiber pigtails. ⊙ High detection efficiency (>20% with an afterpulsing probability of <2%).
- ◎ Suitable for both high-speed gated mode (≥100 MHz) and free-running mode applications.
- ◎ Low dark count rate at elevated temperatures (optimized performance: <2 kHz at 20% detection efficiency, 0°C, and 100 MHz).
- Applications:
- ◎ Quantum secure communication
- ◎ Low-light detection
- ◎ Laser ranging
- ◎ Biomedicine
Technical Specification:
| Parameter/Symbol | Test Conditions | Min | Max | Unit | |
| DC Characteristics Tc=23±2℃ | Breakdown Voltage，Vbr | Id=10μA | 50 | 80 | V |
| Responsivity，Re | λ=1.55μm,Vr=Vbr-2V,φe=1μW | 8 | A/W | ||
| Dark Current，Id | Vr=Vbr-2V,De=0 | 1 | nA | ||
| Capacitance，Ctot | Vr=Vbr-2V,f=IMHz | 0.25 | pF | ||
| Breakdown Voltage Temperature Coefficient，n | Top=-40-+30℃,I=10μA,Φe=0 | 0.15 | V/℃ | ||
| Geiger-mode Characteristics Top=0℃ | Photon Detection Efficiency，PDE | 0.1ph/pulse,λ=1.55μm | 20 | % | |
| Dark Count Rate, DCR | fg=100MHz,PDE=20% | 10 | kHz | ||
| Afterpulsing Probability，APP | fg=100MHz,PDE=20% | 2.5 | % | ||
Package Dimension and pin function:
| Model | Part # | |
| 1 | InGaAs SPAD3pin TO46 Tail-style detector | P46G2P002 |
| 2 | Built-inTEC Type InGaAs SPAD 6pin TO8E Fiber-optic detector | P08G2F001 |
| 3 | Built-inTEC Type InGaAs SPAD 6pin TO8E Fiber-optic detector | P08G2F002 |
| 4 | Built-in TEC type InGaAs SPAD 10pin Butterfly-shaped detector | D10G2P001 |
| TEC Performance (323k/N2) | ||
| Parameter | Unit | MAX |
| ATmax | K | 113 |
| Qmax | w | 0.4 |
| △lmax | A | 0.7 |
| Umax | V | 4.3 |
| ACR | Ohm | 5.51 |
| Thermistor5kO at 25℃ Thermistor Constant A=1.2548E-03, B=2.373BE-04, C=1.3222E-07 | ||
| TEC Performance (323k/N2) | ||
| Parameter | Unit | MAX |
| ATmax | K | 119 |
| Qmax | w | 0.8 |
| △lmax | A | 2.5 |
| Umax | V | 2.2 |
| ACR | Ohm | 0.78 |
| Thermistor 5kD at 25℃ Thermistor Constant A=1.2548E-03, B=2.3738E-04, C=1.3222E-07 | ||
| TEC Performance (323k/N2) | ||
| Parameter | Unit | MAX |
| ATmax | K | 119 |
| Qmax | w | 0.8 |
| △lmax | A | 2.5 |
| Umax | V | 2.2 |
| ACR | Ohm | 0.78 |
| Thermistor 5kQ at 25℃ Thermistor Constant A=1.2548E-03, B=2.3738E-04, C=1.3222E-07 | ||
Reliability: The product complies with all reliability requirements specified in Telcordia-GR-468-CORE.
*Customization services are available; products can be delivered in a customized configuration.