摘要
We demonstrate a robust femtosecond LIDAR setup by using two free-running environmentally stable allpolarization-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.
We demonstrate a robust femtosecond LIDAR setup by using two free-running environmentally stable allpolarization-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.
作者
Yuepeng Li
Yawen Cai
Runmin Li
Haosen Shi
Haochen Tian
Mingzhao He
Youjian Song
Minglie Hu
李跃鹏;蔡娅雯;李润敏;师浩森;田昊晨;赫明钊;宋有建;胡明列(Ultrafast Laser Laboratory,Key Laboratory of Opto-electronic Informa tion Science and Technology of Ministry of Education,School of Precision Instruments and Opto-electronics Engineering,Tianjin University,Tianjin 300072,China;Institute of Spacecraft System Engineering,China Academy of Space Technology,Beijing 100094,China 'National Institute of Metrology,Beijing 100029,China;National Institute of Metrology,Beijing 100029,China)
基金
supported by the Natural Science Foundation of Tianjin(No.18JCYBJC16900)
the National Natural Science Foundation of China(NSFC)(Nos.61675150,61827821,and 61535009)
