[20p-C303-1~11] 3.8 Optical measurement, instrumentation, and sensor

▲ [20p-C303-7] High resolution ToF LiDAR using 1.55μm gain switched-LD

〇(M1)Yuan Gao¹, Jui-Hung Hung², Hiroyuki Yokoyama^1,2, Hirohito Yamada^1,2 (1.Grad. School of Eng, 2.NICHe, Tohoku Univ)

Keywords:lidar, gain-switched LD, ToF

Recently, Light Detection and Ranging (LiDAR) technology for distance measurement have been widely used as autonomous vehicles, astronomy, atmospheric wind and so on.Time-of-flight (ToF) measurement in pulsed mode is the traditional sensing technique for distances longer than 100m and is routinely used for many civilian applications.The range resolution of conventional ToF method is limited to several millimeters due to nanosecond pulse width. In this report, we use the picosecond optical pulses generated by a gain switching laser diode (GS-LD) for high precision short distance (<100m) measurement.