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

Sensors

Jiangtao Xi¹  Qinghua Guo¹  Yuxi Ruan¹  Yanguang Yu¹  Zhuqiu Chen¹  Bairun Nie¹  Jun Tong¹ 

[1] School of Electrical, Computer and Telecommunications Engineering, University of Wollongong, Northfields Avenue, Wollongong 2522, Australia;

关键词: doppler LiDAR;    dual-frequency laser;    optical feedback;    velocity measurement;    laser dynamics;   

DOI  :  10.3390/s20216303

来源: DOAJ

【 摘 要 】

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.

【 授权许可】

Unknown