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Photon-counting chirped amplitude modulation lidar system using superconducting nanowire single-photon detector at 1550-nm wavelength |
| Hui Zhou(周慧)1,3, Yu-Hao He(何宇昊)1, Chao-Lin Lü(吕超林)1, Li-Xing You(尤立星)1,3, Zhao-Hui Li(李召辉)2, Guang Wu(吴光)2, Wei-Jun Zhang(张伟君)1, Lu Zhang(张露)1, Xiao-Yu Liu(刘晓宇)1, Xiao-Yan Yang(杨晓燕)1, Zhen Wang(王镇)1 |
1 State Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Microsystem and Information Technology(SIMIT), Chinese Academy of Sciences, Shanghai 200050, China;
2 State Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai 200062, China;
3 CAS Center for Excellence in Superconducting Electronics(CENSE), Shanghai 200050, China |
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Abstract 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.
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Received: 13 July 2017
Revised: 11 September 2017
Accepted manuscript online:
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PACS:
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85.25.Pb
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(Superconducting infrared, submillimeter and millimeter wave detectors)
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42.68.Wt
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(Remote sensing; LIDAR and adaptive systems)
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| Fund: Project supported by National Key R&D Program of China (Grant No. 2017YFA0304000), the National Natural Science Foundation of China (NSFC) (Grant Nos. 61501442 and 61671438), and the Joint Research Fund in Astronomy (U1631240) under Cooperative Agreement between the NSFC and Chinese Academy of Sciences (CAS). |
Corresponding Authors:
Li-Xing You
E-mail: lxyou@mail.sim.ac.cn
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Cite this article:
Hui Zhou(周慧), Yu-Hao He(何宇昊), Chao-Lin Lü(吕超林), Li-Xing You(尤立星), Zhao-Hui Li(李召辉), Guang Wu(吴光), Wei-Jun Zhang(张伟君), Lu Zhang(张露), Xiao-Yu Liu(刘晓宇), Xiao-Yan Yang(杨晓燕), Zhen Wang(王镇) Photon-counting chirped amplitude modulation lidar system using superconducting nanowire single-photon detector at 1550-nm wavelength 2018 Chin. Phys. B 27 018501
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