紫外预电离TEA CO2激光器的实验研究  

Experimental Research on UV-preionized TEA CO_2 Laser

作　　者：曹建建[1] 梁思远[1] 李殿军[1] 

机构地区：[1]中国科学院长春光学精密机械与物理研究所

出　　处：《激光与红外》2008年第2期128-131,共4页Laser & Infrared

摘　　要：介绍了采用火花针紫外预电离高重复频率TEA CO2激光器系统的结构及其实验研究结果。该激光器的脉冲放电行为由旋转火花开关和高压脉冲触发器进行控制,并通过自动翻转电路实现对称张氏电极之间的均匀辉光放电。通过改变激光器工作气体气压、充气配比及注入能量,测量单脉冲输出能量。实验结果表明,激光器的输出能量及电光转换效率随CO2或N2充气压改变存在最佳点,最佳点与注入能量有关。输出能量及电光转换效率与总充气压呈线性关系。该激光器在单脉冲放电条件下比在高重复频率时能够注入更多的能量和充入更高的气压,脉冲能量最大输出可达53 J以上,经过进一步地参数优化,该激光器最高的电光转换效率达到17%以上。Results and configuration of a high-repetition-rate pulsed-discharge TEA CO2 laser with spark-pins ultraviolet preionization are described. The uniform glow discharges between two symmetrical Chang electrodes through an auto-preionization electrocircuit are controlled by a high-voltage pulsed trigger and a rotary spark-gap switch. The experimental dependence of single pulse output of laser emission as functions of pressure and proportion of gas mixture and of injected energy. The results indicate that the single pulse output and opto-electric conversion efficiency has an optimal point with the pressure of CO2 or pressure of N2 and this point can be changed with injected energy. The single pulse output and opto-electric keeps a linear relation with the gas pressure. In the situation of the single pulse mode, the laser can inject much energy and fill up high gas pressure comparing the repetition pulsed-discharge mode, simultaneously, the maximum pulsed output energy of 53J is obtained. The highest conversion efficiency reaches 17 % after further parameters optimization.

关 键 词：TEA CO2激光器 紫外预电离 工作气体气压和充气配比 转换效率 

分 类 号：TN248.22[电子电信—物理电子学]