高频激励横流CO2激光器的实验研究

本文在实验上在气压为120mba、100mba和80mba,气压比为CO2:N2:Ar=7:46.5;46.5,间隙为20mm,26mm和27mm,电极直径为12mm、长为700mm的情况下,对网络的高频传输特性,间隙高频放电的伏安特性及激光功率输出特性进行了一定的研究,在国内首次得到高频激励横流CO2激光器400W的激光输出.注入功率密度达20W/cm3,与相同条件下的直流针板式激光器相比最大注入功率提高了约一倍,最大电光转换效率为9%.

The experimental investigations of high frequency excited transverse CO2 laser

In this paper,the purpose is to introduec the some experimental investigations,such as high frequency transmission characteristic of the impedence network,the voltage-current characteristic of plasma,and laser power output characteristic. The gas is composed of CO₂,N₂,Ar in mole fraction of 7:46.5:46.5,and pressure is 120mba,100mba,and 80 mba,respectively. The electrode is 12mm in diameter,700mm in length. 400W laser power output and 9% electric-optic efficiency yield with high frequency excited transverse CO₂ laser in the country. The input power density,which is about 20 W/cm³,is about 2 times that of DC glow discharge pin-plan transverse CO₂ laser.