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最近已经报导由工作在大气压下脉冲放电的CO_2激光器中获得了兆瓦级峰值功率[A.J.Beaulieu LF.6.14.1970]。放电横跨于激光器,产生了高气压下激励激光器所要求的高电场强度。本文描写在一只沿管轴方向利用了60只独立电容器的1.5米长的激光管中,作为气压和放电电压函数测量了小信号增益,脉冲能量以及脉宽。增益系数每厘米为1％量级或更小些,与典型的直流激励的CO_2激光器的数值相当。峰值功率近似地按总气压的平方而增加,这是由于随着气压的增加使得脉冲能量增加和脉冲宽度减少两者所致。
It has recently been reported that megawatt-peak power is obtained from CO 2 lasers operating at pulsed discharge at atmospheric pressure [A.J.Beaulieu LF.6.14.1970]. The discharge spans the laser, creating the high electric field strength required to excite the laser at high pressures. This article describes the small signal gain, pulse energy and pulse width as a function of barometric pressure and discharge voltage in a 1.5 meter long laser tube utilizing 60 individual capacitors along the tube axis. The gain factor is on the order of 1% per centimeter or less, comparable to typical DC-excited CO 2 lasers. The peak power approximately increases by the square of the total barometric pressure due to both increased pulse energy and reduced pulse width as the barometric pressure increases.