Swept Source Lidar: simultaneous FMCW ranging and nonmechanical beam steering with a wideband swept source
Swept Source Lidar: simultaneous FMCW ranging and nonmechanical beam steering with a wideband swept source
复制标题
扫频光源激光雷达：利用宽带扫频光源同时进行FMCW测距和非机械波束控制
DOI：
10.1364/oe.396707
复制
发表时间：
2020-08-03
期刊：
影响因子：
3.8
通讯作者：
Chong, Changho
中科院分区：
文献类型：
--
作者：
Okano, Masayuki;Chong, Changho
光探测和测距(激光雷达)长期以来一直在各种应用中使用。稳健的激光雷达系统需要固态波束控制机构。在这里，我们提出并演示了一种名为“扫源激光雷达”的激光雷达方案，它允许我们同时进行调频连续波(FMCW)测距和非机械波束控制。波长色散元件提供角度光束控制，而激光频率由宽带扫频源在其整个调谐带宽内连续扫频。利用可调谐垂直腔面发射激光器和1轴机械光束扫描仪，获得了三维点云数据。扫频源激光雷达系统可以与各种波控元件灵活组合，实现全固态FMCW激光雷达系统。(C)OSA开放获取出版协议条款下的2020年美国光学学会
Light detection and ranging (lidar) has long been used in various applications. Solid-state beam steering mechanisms are needed for robust lidar systems. Here we propose and demonstrate a lidar scheme called "Swept Source Lidar" that allows us to perform frequency-modulated continuous-wave (FMCW) ranging and nonmechanical beam steering simultaneously. Wavelength dispersive elements provide angular beam steering, while a laser frequency is continuously swept by a wideband swept source over its whole tuning bandwidth. Employing a tunable vertical-cavity surface-emitting laser and a 1-axis mechanical beam scanner, three-dimensional point cloud data has been obtained. Swept Source Lidar systems can be flexibly combined with various beam steering elements to realize full solid-state FMCW lidar systems. (C) 2020 Optical Society of America under the terms of the OSA Open Access Publishing Agreement