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采用增益预抽运技术改善被动调Q固体激光器输出的不稳定性,并在Cr~(4+),Nd~(3+):YAG双掺自调Q晶体上得到实验验证。与连续抽运和脉冲抽运条件下的激光脉冲参数进行比较,激光脉冲的频率稳定性和幅值稳定性都有大幅度提高,并在实验基础上给出了预抽运参数的优化结论。
The gain pre-pumping technique was used to improve the output instability of passive Q-switched solid state laser and the experimental verification was carried out on Cr ~ (4 +), Nd ~ (3 +): YAG double-doped Q-switched crystals. Compared with the parameters of laser pulse under continuous pumping and pulse pumping conditions, the frequency stability and amplitude stability of laser pulse are greatly improved, and the optimal conclusion of pre-pumping parameters is given on the basis of experiments.