Long-distance ranging with high precision using a soliton microcomb  

作　　者：JINDONG WANG ZHIZHOU LU WEIQIANG WANG FUMIN ZHANG JIAWEI CHEN YANG WANG JIHUI ZHENG SAI T.CHU WEI ZHAO BRENT E.LITTLE XINGHUA QU WENFU ZHANG 

机构地区：[1]State Key Laboratory of Precision Measuring Technology&Instruments,Tianjin University,Tianjin 300072,China [2]State Key Laboratory of Transient Optics and Photonics,Xi’an Institute of Optics and Precision Mechanics,Chinese Academy of Sciences,Xi’an 710119,China [3]University of Chinese Academy of Sciences,Beijing 100049,China [4]Department of Physics and Materials Science,City University of Hong Kong,Hong Kong,China

出　　处：《Photonics Research》2020年第12期1964-1972,共9页光子学研究（英文版）

基　　金：Key Projects Supported by Science and Technology of Tianjin(18YFZCGX00920);Youth Innovation Promotion Association of the Chinese Academy of Sciences(2016353);Strategic Priority Research Program of the Chinese Academy of Sciences(XDB24030600);National Key Research and Development Program of China(2018YFB2003501,2018YFF0212702);National Natural Science Foundation of China(51675380,51775379,61635013,61675231,61705257,61805277)。

摘　　要：Laser-based light detection and ranging(lidar)plays a significant role in both scientific and industrial areas.However,it is difficult for existing lidars to achieve high speed,high precision,and long distance simultaneously.Here,we demonstrate a high-performance lidar based on a chip-scaled soliton microcomb(SMC)that can realize all three specialties simultaneously.Aided by the excellent properties of ultrahigh repetition rate and the smooth envelope of the SMC,traditional optical frequency comb(OFC)-based dispersive interferometry is heavily improved and the measuring dead zone induced by the mismatch between the repetition rate of the OFC and resolution of the optical spectrum analyzer is totally eliminated.Combined with an auxiliary dual-frequency phase-modulated laser range finder,the none-dead-zone measurable range ambiguity is extended up to 1500 m.The proposed SMC lidar is experimentally implemented in both indoor and outdoor environment.In the outdoor baseline field,real-time,high-speed(up to 35 k Hz)measurement of a long distance of^1179 m is achieved with a minimum Allan deviation of 5.6μm at an average time of 0.2 ms(27 nm at an average time of 1.8 s after high-pass filtering).The present SMC lidar approaches a compact,fast,high-precision,and none-dead zone long-distance ranging system,aimed at emerging applications of frontier basic scientific research and advances in industrial manufacturing.

关 键 词：LIDAR SOLITON HIGH 

分 类 号：TN958.98[电子电信—信号与信息处理]