1030nm单光子探测激光雷达技术  

1030 nm single-photon detection lidar technology

作　　者：杨函霖 李召辉[1] 吴光[1] YANG Han-Lin;LI Zhao-hui;WU Guang(State Key Laboratory of Precision Spectroscopy,East China Normal University,Shanghai 200241,China)

机构地区：[1]华东师范大学精密光谱科学与技术国家重点实验室,上海200241

出　　处：《激光与红外》2023年第11期1671-1676,共6页Laser & Infrared

基　　金：国家自然科学基金项目(No.11804099,No.62075062,No.62175067);上海市教育发展基金会和上海市教育委员会“晨光计划”项目(No.21CGA31)资助。

摘　　要：1μm波段单光子探测激光雷达因大气透过率高、背景噪声低、红外隐蔽性好、激光脉冲能量高,在远距离激光测距和成像方向极具发展前景。然而,传统的1064 nm激光器缺少对应的高性能的单光子探测器,成为1μm波段单光子探测激光雷达的发展瓶颈。盖革Si APD单光子探测器(Si SPAD)具有优异的探测性能,但是其在1064 nm波长的探测效率极低。针对这个激光器与探测器的矛盾,本文研究1030 nm波长单光子探测激光雷达技术,Si SPAD在1030 nm的探测效率是1064 nm的2.9倍,相同条件的单光子探测激光雷达探测距离提升67.8%。另外,本文搭建双棱镜光束扫描装置,演示了1030 nm波长的单光子三维成像。The 1μm band single-photon detection Lidar has great development prospects in the direction of long-distance laser ranging and imaging due to high atmospheric transmittance,low background noise,great infrared concealment,and high laser pulse energy.However,the lack of corresponding high-performance single-photon detectors for conventional 1064 nm lasers has become a bottleneck in the development of 1μm band single-photon detection lidar.Geiger Si APD single-photon detector(Si SPAD)has excellent detection performance,but its detection efficiency at 1064 nm wavelength is extremely low.In response to the contradiction between the laser and the detector,the 1030 nm wavelength single-photon detection Lidar technology is investigated.The detection efficiency of Si SPAD at 1030 nm is 2.9 times higher than that of 1064 nm,and the detection distance of single-photon detection Lidar under the same conditions is improved by 67.8%.In addition,abeam scanning device composed of two wedge-shaped prisms is built to demonstrate single-photon 3D imaging at 1030 nm.

关 键 词：单光子测距 单光子探测 三维成像 激光雷达 

分 类 号：TN249[电子电信—物理电子学] TN958.98