A 1550 nm Single-Photon Detector Using a Thermoelectrically Cooled InGaAs Avalanche Photodiode

Abstract
We report a gated-mode single-photon detector sensitive to 1550 nm radiation using a thermoelectrically cooled InGaAs avalanche photodiode. At the operation temperature of 238 K, we have obtained a quantum efficiency of 24.3% with a dark-count probability per gate of 9.4×10-5.