Single Photon HgCdTe Avalanche Photodiode and Integrated Detector Cooler Assemblies for Space Lidar Applications

[摘要] A linear mode photon counting HgCdTe avalanche photodiode (APD) focal plane array (FPA) detector was developed for space lidar applications. An integrated detector cooler assembly (IDCA) was manufactured using a miniature Stirling cooler. The HgCdTe APD demonstrated a greater than 60% photon detection efficiency from 0.9 to 4.3 μm wavelength and a dark count rate less than 250,000/s. The IDCA cooled the FPA to 110K from ambient room temperature at a total electrical power of 7 W. The IDCA has passed environmental tests, including vibration, thermal cycling and thermal vacuum tests.

[发布日期] 2018-04-15

[学科分类] 原子、分子光学和等离子物理

[关键词] AIRBORNE EQUIPMENT;CRYOGENIC COOLING;INTEGRATED CIRCUITS;OPTICAL RADAR;PHOTODIODES;PHOTONS;STIRLING CYCLE;TECHNOLOGY UTILIZATION;THERMAL VACUUM TESTS;WAVEFORMS