The Saphira from Leonardo is a HgCdTe Avalanche Photodiode Array that operates from 0.8 to 2.5 &mum. It provides an output voltage of 1-2 V and has a charge capacity of 2x105 electrons. The photodiode array supports snapshot/rolling mode. It has an avalanche gain of up to 80 dB and consumes 30 mW of power. The photodiode has pixel operability of above 99% and a high photon sensitivity of up to 1 photon rms. It can perform multiple non-destructive readouts which can allow Fowler sampling or “down the slope” sampling to significantly reduce the noise and increase the sensitivity.
The photodiode array is available in a 68-Pin LCC package having an array size of 320 x 256 pixels with a pixel pitch of 24 μm. It is suitable for applications such as spectroscopy, wave-front sensors, fringe trackers, and imaging in any photon-starved scenario.