基于雪崩级联电路控制激光照明源的水下激光选通成像  

Range-gated imaging of underwater laser based on control laser illumination sources of avalanche cascade circuit

作　　者：何为 谈宇光 章逸舟 陈良培 于广文 陈巍 HE Wei;TAN Yuguang;ZHANG Yizhou;CHEN Liangpei;YU Guangwen;CHEN Wei(Shenzhen Institute of Advanced Technology,Chinese Academy of Sciences,Shenzhen 518055,China;Key Laboratory of Human-Machine Intelligence-Synergy Systems,Shenzhen Institute of Advanced Technology,Chinese Academy of Sciences,Shenzhen 518055,China)

机构地区：[1]中国科学院深圳先进技术研究院,广东深圳518055 [2]中国科学院人机智能协同系统重点实验室(深圳先进技术研究院),广东深圳518055

出　　处：《应用光学》2021年第5期830-838,共9页Journal of Applied Optics

基　　金：深圳市科创委基础研究布局项目(JCYJ20160608153308846);广东省科技厅国际科技合作领域基金(2018A050506065);中央引导地方科技发展专项资金项目(水下移动观测测试平台建设)。

摘　　要：基于雪崩级联原理研发了用于水下激光选通成像的MARX级联电路激光照明源。相对于普通激光驱动器,该MARX级联电路有输出脉冲窄、峰值高、上升沿短、重复频率高、成本低、体积小、质量轻等优点。采用级联电路研发的脉冲激光照明光源在实现ns量级脉冲宽度性能的基础上保持了照光源系统体积的小型化。该脉冲照明源结合激光整形及匀化光学技术进行了水下选通成像验证实验,在10 ns的脉冲宽度下,实现水下7倍衰减长度范围内的选通成像。该文涉及的电路、光学方面的改进对降低激光选通成像系统的体积、成本及实际应用具有重要意义。A MARX cascade circuit laser illumination source for underwater laser range-gated imaging was developed based on the avalanche cascade principle.Compared with the ordinary laser drivers,this MARX cascade circuit had the advantages of narrow output pulse,high peak voltage,short rising edge,high repetition frequency,low cost,small volume and light weight.The pulsed laser illumination source developed by the cascade circuit maintained the miniaturization of illumination source system volume on the basis of realizing the pulse width performance with nanosecond(ns)magnitude.The experiment of range-gated imaging of underwater was carried out by the pulsed illumination source combined with laser shaping and homogenizing optical technology.With a pulse width of 10 ns,the range-gated imaging in the range of 7 times attenuation length under the water was achieved.The improvement of circuits and optics is of great significance to the reduction of volume and cost,and the application of laser range-gated imaging system.

关 键 词：水下激光选通成像 雪崩级联 脉冲激光光源 激光整形 

分 类 号：TN249[电子电信—物理电子学]