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为了获得较高的激光输出功率,介绍了射频激励扩散冷却全金属板条波导CO2激光器,放电区域由左右两个铝合金壁和上下两个铝合金电极构成,放电区域高2 mm,宽20 mm,长386 mm,工作气体混合比CO2:N2:He:Xe=1:1:3:0.26,该技术代替了过去的金属陶瓷结构,结合纵向电压均匀分布技术和面增比技术,获得了127 W的激光输出功率,光电转换效率高达14%。实验中,照相机放在激光器的纵向轴心上,清楚地记录了CO2激光器的放电现象。实验结果表明,该激光器小信号增益1%/cm,饱和光强1 200 W/cm2,促进了CO2激光器的发展。
In order to obtain high laser output power, a radio-frequency excited diffusion-cooled all-metal strip waveguide CO2 laser is introduced. The discharge area is composed of two aluminum alloy walls on the left and right and two aluminum alloy electrodes on the upper and lower sides. The discharge area is 2 mm high and 20 mm wide , 386 mm long, working gas mixture ratio CO2: N2: He: Xe = 1: 1: 3: 0.26. This technology replaces the past cermet structure. Combined with the technology of uniform distribution of longitudinal voltage and surface area ratio, W laser output power, photoelectric conversion efficiency up to 14%. In the experiment, the camera was placed on the longitudinal axis of the laser and the CO2 laser discharge was clearly recorded. Experimental results show that the small signal gain of the laser 1% / cm, the saturation intensity of 1200W / cm2, promoting the development of CO2 lasers.