TEA CO2激光器几种放电电极的比较

 从均匀场电极理论出发，计算并讨论了近似Rogowski电极、Chang电极(含紧凑式Chang电极)和Ernst电极的形状、理论电场分布和实际电场分布。对实验室所用的几种电极进行了脉冲放电实验，从而获得了TEA CO₂激光器的放电参数与输出特性，并对这些结果进行了比较和分析。计算表明，在基本参数相同的情况下，Ernst电极具有最紧凑的外形和最佳的均匀电场分布。实验表明，采用近似Rogowski电极的TEA CO₂激光器具有最大放电辉光范围和44 kV的最小放电击穿电压；采用Ernst电极的TEA CO₂激光器具有25 J的最高单脉冲能量和最大17.2%的斜率效率。最后提出了TEA CO₂激光器主电极的选择建议。

Comparison of several discharge electrodes for TEA CO2 laser

From the theory of uniform-field electrodes,profiles of electrodes,theoretical and practical distributions of electric field on the surface of near Rogowski electrode,Chang electrode(including compact Chang electrode) and Ernst electrode were calculated and discussed.Using these electrodes in our laboratory,pulsed discharge experiments were carried out on TEA CO_2 laser,so discharge performance and output characteristics were obtained,and the results of the experiments on these electrodes were compared and analyzed.The calculation results show that Ernst electrode has the most compact profile and optimal uniform electric-field distribution if electrodes have the same fundamental parameters.The experiment results indicate that TEA CO_2 laser gains the biggest glow discharge area and has the lowest discharge breakdown voltage of 44 kV by using near Rogowski electrode;and the maximum pulsed laser energy of 25 J and highest slope efficiency of 17.2% were obtained by using Ernst electrode.