【摘要】 采用作者提出的“自身光信号放大法”,利用放电管中本身的激光振荡信号,测试了脉冲空心阴极放电中 KrⅡ469.5nm 激光振荡的增益的时间与空间特性。测试结果表明,激光振荡首先从空心阴极管中心产生,然后扩展到整个管。在最佳 He-Kr 充气比时,最大增益可达103%m^-1,这是在放电后约2μs 时达到,这和激光脉冲中的峰值相对应。就现有报道中,就这条谱线的激光振荡而言,所达到的增益是最高的。用标定损耗片插入法测定了同样的放电条件下的增益,验证了上述测试结果的可靠性。更多还原

【Abstract】 Using the“optical signal itself amplifing method”,proposed by authors,the spatial and temporal gain characteristics of Kr Ⅱ 469.5 nm laseroscillation in pulsed hollow cathode discharge （HCD） was measursd bythe self laser oscillation signal of the same discharge tube.The resultsshow that,the laser oscillation was initiated at the center of the hollowcathod,then extended to whole hollow cathed.The maxmum gain of 103%m^-1 was gotten in the optimum pressure ratio of He and Kr.It was arrivedat about 2 μs after the dicharge,corresponding to peak of the laser pulse.The gain of laser oscillation is the highest in the reported results on thisspectral line.Using the method of inserting the calibrated attenuation platesthe gain was measured in the same discharge condition also.It shows that,the above measurement result is reliable.更多还原