测距
光学
飞秒
材料科学
激光器
激光雷达
光纤激光器
物理
计算机科学
电信
作者
Yuepeng Li,Yi Cai,Runmin Li,Haosen Shi,Haochen Tian,Ming-Ming He,Youjian Song,Minglie Hu
出处
期刊:Chinese Optics Letters
[Shanghai Institute of Optics and Fine Mechanics]
日期:2019-01-01
卷期号:17 (9): 091202-091202
被引量:13
标识
DOI:10.3788/col201917.091202
摘要
We demonstrate a robust femtosecond LIDAR setup by using two free-running environmentally stable all-polarization-maintaining nonlinear amplified loop mirror mode-locked fiber lasers. Based on the asynchronous optical sampling method, a ranging accuracy of ±2 μm within 65 m has been achieved, as tested in an 80-m-long underground optical tunnel. Through the Kalman filter in real-time data processing, the measurement accuracy can be maintained at a 200 Hz update rate. This setup provides a practical tool for various large-scale industrial and astronomical ranging applications.
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