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The Si-APD is a fiber pigtailed single photon detector module sensitive to the visible and near infrared wavelength spectrum. The photodetection is performed by a passively quenched Silicon Avalanche photodiode in Geiger mode cooled to -30°C allowing a nominal efficiency of 50% at 808nm and low dark counts of approximately 300 counts/sec.
Physical Parameters:
| Size | approx 102mm x 70mm x70mm |
| Weight | 700g |
Electrical Specifications:
| Supply Voltage | 12V, max 3A (DC 2.1mm socket) |
| Output pulse | NIM standard (LEMO00 connector) |
| Pulse width | 2ns |
Optical Specifications:
| Wavelength range | 400-1100nm |
| Efficiency at -30°C | 60% at 808nm |
| Dark counts | approx 300 cps |
| Dead time | 1-2µs |
| Timing jitter | 0.2-0.6ns |
| Input fiber | 50µm core with FC/APC connector |
