But there are complications. To get very high gain, the circuit becomes prone to oscillating due to the inherent capacitance of the photodiode, so there’s a damping capacitor in the feedback loop.

Uni-Traveling Carrier Photodiodes (UTC-PDs) are advanced devices used for high-speed optical detection, particularly in telecommunications and data transmission. These photodiodes are designed to ...

A G-M tube is not the only game in town though, and even the humble photodiode ... Such a sensitive high-gain device needs to be appropriately shielded, so the whole circuit is contained in ...