中国光学2012，Vol.5Issue(3)：283-288,6.
声光调Q CO2激光器的输出特性
Output performance of acousto-optic Q-switched CO2 laser
摘要
Abstract
A compact CO2 laser with short pulse duration,high peak power and high repetition was developed by using an Acousto-optic（AO） Q-switch.The operating principle of the AO Q-switch was analyzed,and the theoretical model of CO2 laser was introduced based on the small-signal gain and saturation intensity.Then the optimal numerical solution of the transmission for an output mirror was given by this model.Based on the compact CO2 laser in our laboratory,the experiments to verify the theoretical result were performed.The optimal coupling output factor gained by the theory and experiments is 39%.The variable law of laser output performance with pulse repetition frequency was researched.Results show that the peak power of the laser will fall down when the pulse repetition frequency is greater than 1 kHz,which is related to the radiation life of CO2 molecular upper energy level,and is limited by the heat effect of AO Q-switch.The range of pulse repetition frequency can be adjusted from 1 Hz to 100 kHz.When the pulse repetition frequency is 1 kHz,the measured pulse duration is 156 ns and the peak power is 10 kW.The laser has good stabilization,and is suitable for a light source used in laser-matter interaction.关键词
激光技术/CO2激光器/声光调Q/输出镜/透过率Key words
laser technology/CO2 laser/acousto-optic Q-switching/output mirror/transmission分类
信息技术与安全科学引用本文复制引用
潘其坤,谢冀江,阮鹏,张来明,张传胜..声光调Q CO2激光器的输出特性[J].中国光学,2012,5(3):283-288,6.基金项目
激光与物质相互作用国家重点实验室基金资助项目 （）
吉林省科技厅科技支撑计划资助项目 （）
