Photon-counting chirped amplitude modulation lidar system using superconducting nanowire single-photon detector at 1550-nm wavelength

被引：8

作者：

Zhou, Hui ^{[1
,3
]}

He, Yu-Hao ^{[1
]}

Lu, Chao-Lin ^{[1
]}

You, Li-Xing ^{[1
,3
]}

Li, Zhao-Hui ^{[2
]}

Wu, Guang ^{[2
]}

Zhang, Wei-Jun ^{[1
]}

Zhang, Lu ^{[1
]}

Liu, Xiao-Yu ^{[1
]}

Yang, Xiao-Yan ^{[1
]}

Wang, Zhen ^{[1
]}

机构：

[1] Chinese Acad Sci, SIMIT, State Key Lab Funct Mat Informat, Shanghai 200050, Peoples R China

[2] East China Normal Univ, State Key Lab Precis Spect, Shanghai 200062, Peoples R China

[3] CAS Ctr Excellence Superconducting Elect CENSE, Shanghai 200050, Peoples R China

来源：

CHINESE PHYSICS B | 2018年 / 27卷 / 01期

基金：

国家重点研发计划; 中国国家自然科学基金;

关键词：

photon counting; photodetectors; lidar; RANGE AMBIGUITY; LASER; NM;

D O I：

10.1088/1674-1056/27/1/018501

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We demonstrate a photon-counting chirped amplitude modulation (CAM) light detection and ranging (lidar) system incorporating a superconducting nanowire single-photon detector (SNSPD) and operated at a wavelength of 1550 nm. The distance accuracy of the lidar system was determined by the CAM bandwidth and signal-to-noise ratio (SNR) of an intermediate frequency (IF) signal. Owing to a short dead time (10 ns) and negligible dark count rate (70 Hz) of the SNSPD, the obtained IF signal attained an SNR of 42 dB and the direct distance accuracy was improved to 3 mm when the modulation bandwidth of the CAM signal was 240 MHz and the modulation period was 1 ms.

引用

页数：5

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