Jan 30 2021 Read 331 Times Laser Components designs a wide range of avalanche photodiodes (APDs) with market leading performance, optimised for different application requirements. These extremely sensitive detectors are capable of detecting light levels down to single photons. Recent developments include a reach-through epitaxial structure with input surface optimised for UV sensitivity. Ultraviolet photons have high energy, which means their absorption depth in silicon is extremely shallow. In conventional photodiodes and APDs, most UV light signal is lost to either reflection, absorption o...