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实验研究了调ＱＮｄ：ＹＡＧ激光器泵浦的增益开关型掺钛蓝宝石激光器的时间特性，泵浦能量水平（泵浦能量／阈值能量）变化范围为２．１～３．８，腔长变化范围为２０ｃｍ～６０ｃｍ，并改变了腔的损耗。根据增益开关激光器时间特性的理论，激光脉冲的建立时间和其脉冲宽度取决于泵浦能量水平和腔长，并与腔损耗成反比，而与泵浦脉宽和波形无关，实验结果与理论分析相符。当用１０ｎｓ脉宽的激光脉冲泵浦时，在２０ｃｍ短腔长情况下获得了比泵浦光脉宽窄的仅４ｎｓ脉宽的激光脉冲。
The time characteristics of gain-switched Ti: sapphire laser pumped by QNd: YAG laser were experimentally studied. The pump energy level (pump energy / threshold energy) ranged from 2.1 to 3.8. The cavity length ranged from 20cm ~ 60cm, and change the cavity loss. According to the theory of time-switched laser gain characteristics, the establishment time and pulse width of laser pulse depends on the pump energy level and cavity length, and is inversely proportional to the cavity loss, and has nothing to do with the pump pulse width and waveform. The experimental results and theoretical analysis Match. When pumped with a 10 ns pulse width, a laser pulse of 4 ns pulse width narrower than that of the pump light was obtained at a short cavity length of 20 cm.