Impact Statement:A dual-frequency Doppler lidar (DFDL) system utilizing a monolithically integrated two-section DFB laser as the light source is presented. The DFDL system has high precis...Show More
Abstract:
A dual-frequency Doppler Lidar (DFDL) with high precision utilizing a monolithic integrated two-section DFB laser as the dual-frequency light source is proposed and exper...Show MoreMetadata
Impact Statement:
A dual-frequency Doppler lidar (DFDL) system utilizing a monolithically integrated two-section DFB laser as the light source is presented. The DFDL system has high precision and resolution in the velocity measurement, across the whole range of it. The accurancy of the DFDL system can be further improved by using higher beat signal. The proposed DFDL is an ideal method to measure target with very low speed.
Abstract:
A dual-frequency Doppler Lidar (DFDL) with high precision utilizing a monolithic integrated two-section DFB laser as the dual-frequency light source is proposed and experimentally demonstrated. The DFDL can be realized with smaller size using the monolithic integrated two-section DFB laser which is fabricated by the reconstruction-equivalent-chirp (REC) technique with high precision and low fabrication cost. The range of the measured speed is from 13.62 μm /s to 1.56 m/s, which covers 6 orders of magnitude. The largest relative error of the DFDL system is 3.16%. The DFDL system has an excellent resolution of 1.95 μm/s, which is suitable to detect micro speed changes.
Published in: IEEE Photonics Journal ( Volume: 11, Issue: 6, December 2019)