基于激光外部光反馈效应的双频多普勒激光雷达。

Dual-Frequency Doppler LiDAR Based on External Optical Feedback Effect in a Laser.

作者信息

Chen Zhuqiu, Yu Yanguang, Ruan Yuxi, Nie Bairun, Xi Jiangtao, Guo Qinghua, Tong Jun

机构信息

School of Electrical, Computer and Telecommunications Engineering, University of Wollongong, Northfields Avenue, Wollongong 2522, NSW, Australia.

出版信息

Sensors (Basel). 2020 Nov 5;20(21):6303. doi: 10.3390/s20216303.

DOI:10.3390/s20216303

PMID:33167438

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7663987/

Abstract

A novel Dual-frequency Doppler LiDAR (DFDL) is presented where the dual-frequency light source is generated by using external optical feedback (EOF) effect in a laser diode (LD). By operating a LD at period-one (P1) state and choosing suitable LD related parameters, a dual-frequency light source can be achieved. Such a dual-frequency source has advantages of the minimum part-count scheme, low cost in implementation, and ease in optical alignment. Theory and system design are presented for the proposed DFDL for velocity measurement with high measurement resolution. The proposed design has a potential contribution to the Light Detection And Ranging (LiDAR) in practical engineering applications.

摘要

本文提出了一种新型双频多普勒激光雷达（DFDL），其双频光源是利用激光二极管（LD）中的外部光学反馈（EOF）效应产生的。通过使LD工作在周期一（P1）状态并选择合适的与LD相关的参数，可以实现双频光源。这种双频光源具有部件数量最少方案的优点、实施成本低以及光学对准容易等优点。本文针对所提出的用于高测量分辨率速度测量的DFDL给出了理论和系统设计。所提出的设计在实际工程应用中对光探测与测距（LiDAR）有潜在贡献。