红外与毫米波学报2024，Vol.43Issue(4)：563-571,9.DOI:10.11972/j.issn.1001-9014.2024.04.017
小型化微片阵列式被动调Q全固态激光器
Miniaturized microchip array passive Q-switched solid-state laser
摘要
Abstract
To address the spatial constraints in unmanned aerial vehicle target detection systems,a scheme for a multi-beam scanning passive Q-switched microchip array solid-state laser is proposed.This system utilizes a six-core semicon-ductor laser array to compactly pump a strip-shaped Nd:YAG/Cr4+:YAG bonded crystal.At a pumping power of 1.6 W per path,it generates six output laser beams with a wavelength of 1 064.4 nm,pulse width of 2.4 ns,beam quality of 1.39,peak power of 3.75 kW,and a repetition frequency up to 22 kHz.The entire system's volume is only 2 cm×2 cm×1.5 cm,and achieves simultaneous output of six laser paths.The study investigated the impact mechanism of the ini-tial transmittance of the Q-switching crystal and the reflectivity of the output mirror on the laser pulse repetition frequen-cy and peak power,with a particular focus on the uniformity of the laser output from the pump source cores.The feasi-bility of using a single laser-bonded crystal to produce multiple narrow pulse laser beams in the nanosecond range was experimentally verified.The research results demonstrate the miniaturized structure's ability to achieve multi-beam emis-sion from a passive Q-switched solid-state laser,providing insights for the miniaturization and integration of laser sourc-es in detection systems.关键词
激光测距/全固态激光器/微片阵列式/小型化/被动调QKey words
laser ranging/solid-state laser/microchip array/miniaturization/passive Q-switched分类
信息技术与安全科学引用本文复制引用
王震,李立广,赵柏秦,李加庚,韩勤..小型化微片阵列式被动调Q全固态激光器[J].红外与毫米波学报,2024,43(4):563-571,9.基金项目
国家重点研发计划(2020YFB1805701) （2020YFB1805701）
国家自然科学基金(61934003) Supported by the National Key R&D Program of China(2020YFB1805701)and the National Natural Foundation of China(61934003) （61934003）
