Pugh E R, Wallace J, Jacob J H, Northam D B, Daugherty J D
Appl Opt. 1974 Nov 1;13(11):2512-7. doi: 10.1364/AO.13.002512.
The optical quality of a pulsed atmospheric CO(2) electric laser is investigated. The density disturbances in the optical cavity are caused by edge waves originating at the anode and cathode. Volumetric heating effects associated with a nonuniform electric discharge are shown to be negligible. The disturbance propagating from the cathode results from a discontinuity in the spatial heating and the cathode fall. The wave emanating from the anode is associated with the presence of a solid surface that prevents the gas from expanding. As a result, lasers have to be designed with pulse durations much less than the acoustic transit time across the cavity.
研究了脉冲大气二氧化碳电激光器的光学质量。光腔内的密度扰动是由起源于阳极和阴极的边缘波引起的。结果表明，与不均匀放电相关的体积加热效应可忽略不计。从阴极传播的扰动是由空间加热和阴极压降的不连续性引起的。从阳极发出的波与阻止气体膨胀的固体表面的存在有关。因此，激光器的设计脉冲持续时间必须远小于声波在腔内的传播时间。
