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Lidar-radar for underwater target detection using a modulated sub-nanosecond Q-switched laser
Li, Guangying1,2; Zhou, Qiang3; Xu, Guoquan4; Wang, Xing1; Han, Wenjie5; Wang, Jiang3; Zhang, Guodong3; Zhang, Yifan4; Yuan, Zhi'an4; Song, Sijia5; Gu, Shangtai4; Chen, Fubin4; Xu, Ke4; Tian, Jinshou1; Wan, Jianwei4; Xie, Xiaoping1,2; Cheng, Guanghua3
Department瞬态光学研究室
2021-10
Source PublicationOPTICS AND LASER TECHNOLOGY
ISSN0030-3992;1879-2545
Volume142
Contribution Rank1
Abstract

Here we report on a modulated sub-nanosecond lidar-radar for underwater target detection. The modulated laser source is consisted of a 1064 nm master oscillator power amplifier (MOPA) and a frequency-doubling module, outputting pulse energy of 178.1 mJ at 1064 nm with 0.76 ns pulse duration and 87.6 mJ at 532 nm. By using a Fabry-Pe ' rot cavity containing a KTP crystal and two reflectors, the 532 nm laser pulse is modulated into the burst mode with a repetition rate of 500 MHz. A streak tube camera is used as the signal receiving apparatus. An underwater target detection experiment has been carried out. The results indicate that this lidar-radar could emit a stable and powerful modulated signal, which greatly increases the underwater detection range. The cooperation of the streak tube imaging and modulated laser source for underwater target detection experiments is the first attempt in this field. The clear 3-D and 4-D images of the target underwater across 20 m are obtained in the experiments and the spatial resolution of 9 mm can be achieved.

KeywordSub-nanosecond laser Lidar-radar Underwater target detection Fabry-Perot cavity modulating
DOI10.1016/j.optlastec.2021.107234
Indexed BySCI ; EI
Language英语
WOS IDWOS:000674584700003
PublisherELSEVIER SCI LTD
EI Accession Number20212410502905
Citation statistics
Document Type期刊论文
Identifierhttp://ir.opt.ac.cn/handle/181661/94977
Collection瞬态光学研究室
Corresponding AuthorXie, Xiaoping; Cheng, Guanghua
Affiliation1.Xian Inst Opt & Precis Mech CAS, State Key Lab Transient Opt & Photon, Xian 710119, Peoples R China
2.Univ Chinese Acad Sci, Sch Future Technol, Beijing 100049, Peoples R China
3.Northwestern Polytech Univ, Sch Artificial Intelligence Opt & Elect iOPEN, Xian 710072, Peoples R China
4.Natl Univ Def Technol, Coll Elect Sci & Technol, Changsha 410073, Peoples R China
5.China Elect Technol Grp Corp, Res Inst 27, Zhengzhou 450047, Peoples R China
Recommended Citation
GB/T 7714
Li, Guangying,Zhou, Qiang,Xu, Guoquan,et al. Lidar-radar for underwater target detection using a modulated sub-nanosecond Q-switched laser[J]. OPTICS AND LASER TECHNOLOGY,2021,142.
APA Li, Guangying.,Zhou, Qiang.,Xu, Guoquan.,Wang, Xing.,Han, Wenjie.,...&Cheng, Guanghua.(2021).Lidar-radar for underwater target detection using a modulated sub-nanosecond Q-switched laser.OPTICS AND LASER TECHNOLOGY,142.
MLA Li, Guangying,et al."Lidar-radar for underwater target detection using a modulated sub-nanosecond Q-switched laser".OPTICS AND LASER TECHNOLOGY 142(2021).
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