毛细管内有金催化剂的封离型CO2激光器特性研究

金作为催化剂直接置入封离型CO2激光器毛细管能有效地促使放电分解的CO2复合[1],但也导致器件工作状态的改变[2].作者从管内电场分布、有效放电等离子体体积及激励效率、迁移电流、双极性扩散、管壁电荷中和与壁电流等方面作了分析,用以自己的工艺镀制的环膜、离散膜及未置金催化剂管进行了比较实验,建立了器件的数学模型并编程数值计算,指出加入导体环膜后将降低器件效率,改变乃至恶化其运行状态,明确提出离散膜和弥散膜的概念并肯定其优越性,修正了前期工作所得“置入金环使着火电压与I-V曲线都升高”的结论.

Investigation of the performance characteristics of sealed off CO 2 laser with distributed gold catalyst sited at the inner wall of the discharge capillary

Being a catalyst,gold sited directly in capillary of sealed off CO 2 laser can make CO 2 effectively recompose that disassociated with the discharge,but cause change of the performance status of device yet.This paper investigated the electric field distribution,available volume of plasma and exciting efficiency,drift current,ambipolar diffusion,the neutralization of the charges on the wall in capillary,especially the wall current,performed further contrasting test with ring film and separate film plated by means of the plating technology ourselvse and non catalyst devices,founded their mathematical model and made program to simulate numerally,pointed out that the conducting ring film result in the efficiency decline and change or going so far as to worsen the characteristic of laser performance,definitely advanced the new concepts and relevant device design about separate and disperse film catalyst and confirmed their superiority,and,modified the conclusion of previous work,i.e.,both the breakdown voltage and the terminal voltage were increasing in the gold-ring tube.