直流电纵向激励机械调Q CO_2激光器的动力学分析  

Analysis of Kinetics of a Mechanical Q-Switched CO_2 Laser with Longitudinal DC Discharge

作　　者：姜云[1] 王铁军[1] 张洪志[1] 孙寒[1] 康智慧[1] 高锦岳[1] 

机构地区：[1]吉林大学物理学院,长春130021

出　　处：《吉林大学学报（理学版）》2008年第1期115-119,共5页Journal of Jilin University:Science Edition

基　　金：国家自然科学基金(批准号:10334010)

摘　　要：用一种快速斩波器实现简单直流电纵向激励CO2激光的机械Q调制．产生了峰值功率为1～2kW、重复频率为740Hz、单脉冲宽度为200～300ns的激光脉冲．用六温度模型模拟该机械调QCO2激光器Q调制的动力学过程，分析了CO2分子分解为CO分子比率、腔内放电电子密度（放电电流）对输出脉冲强度的影响，并计算了Q转换输出脉冲线形、脉冲峰值功率及脉冲宽度，理论计算分析与实验结果相符．A fast chopper was used to set up a simple mechanical Q-switched CO2 laser with longitudinal DC discharge. The laser pulse with peak power 1 - 2 kW, repetition rate to 740 Hz, pulse width 200 -300 ns, was realized. The dynamical process of Q-switching for the simple mechanical Q-switched CO2 laser was simulated by a six-temperature model. The effects of the dynamical parameters such as the dissociation of CO2 molecules, the electron density in the cavity （the discharge current ） on the output laser intensity were reported. Q-switched output pulse shape, pulse peak power and pulse width were calculated. The theoretical analysis is well consistent with the experimental result.

关 键 词：激光技术 脉冲CO2 激光器 机械调Q 六温度模型 

分 类 号：TN248.2[电子电信—物理电子学]