This product is composed of a detector module, voltage inverter module, refrigeration module, and signal control module, which are interconnected by a 4×4 InGaAs single photon avalanche photodiode (SPAD) chip and a CMOS active passive quenching circuit chip through reverse soldering. In the Geiger working mode, each image of the detector component is independent and operates freely, detecting weak light signal within the near-infrared band range of 0.95-1.65 μm. It can support two product forms: TDC integration or standard TTL level output internally.
-Spectral response bands 0.95-1.65 μm
-Pixel independence and free operation
-Pixel detectable weak photon signal
-Deadtime and adjustable threshold for detecting Geiger avalanche signals
-Supports integrated TDC function, with direct output of digital timestamps
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| TECHNICAL PARAMETER | GD-NIR4100S | GD-NIR4100S-TDC |
| Device type | InGaAs SAPD Array | |
| Array size | 4×4 | |
| Pixel center distance | 100μm x 100μm | |
| Pixel spacing | ≤20um | |
| PDEPhoton efficiency PDE | 10%～25% | |
| DCRDark count rate DCR | ≤10KHz | |
| Post-impulse probability | ≤20% | |
| Dead time | 100ns~1000ns Adjustable | |
| Effective pixel rate | 100% | |
| Control interface | Serial port(baud rate 115200bps) | Serial port(baud rate 115200bps) |
| Data interface | Standard 3.3 VTTL level output | 10 Gigabit Ethernet UDP protocol, TDC digital signal timestamp output |
| Working temperature | -40℃~+55℃ | |
| Storage temperature | -40℃~+70℃ | |
| Power consumption | ≤15W | |
-Distance measurement through fog, haze, smoke and dust, etc
-Near infrared laser warning and laser ranging
-Close range space laser communication
-Long range single photon imaging
-Gas detection, biomedical imaging