Spectral Matching Properties between Avalanche Photodiodes and Typical Objects

Avalanche photodiode detector has come to more and more attention due to single photon detection sensitivity, low noise in night vision field. However, avalanche photodiodes (APD) made of different materials have different photon detection efficiency characteristics. The spectral matching factors were computed and analyzed based on the spectrums of night sky, Si APD & InGaAs APD and typical object under different circumstances. The difference of matching results is significant in full moonlight and clear starlight. These data can be available to adopt appropriate APD as photoelectric conversion devices in night vision system.