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

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

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...

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Bibliographic Details
Published in:Sensors (Basel, Switzerland) Vol. 20; no. 21; p. 6303
Main Authors: Chen, Zhuqiu, Yu, Yanguang, Ruan, Yuxi, Nie, Bairun, Xi, Jiangtao, Guo, Qinghua, Tong, Jun
Format: Journal Article
Language:English
Published: Basel MDPI AG 05-11-2020
MDPI
Subjects:
doppler LiDAR
dual-frequency laser
Electric fields
Interferometry
Investigations
laser dynamics
Lasers
Letter
Light sources
Noise
Optical feedback
Semiconductor lasers
Signal processing
Systems design
Velocity
Velocity measurement
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Summary: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.
Bibliography:SourceType-Other Sources-1
content type line 63
ObjectType-Correspondence-1
ISSN:1424-8220
1424-8220
DOI:10.3390/s20216303