阵列口径Nd：YAG片状激光器重复频率输出特性研究

 介绍了一种新型阵列口径的固体片状激光器的设计及初步实验，研究了其激光输出特性。激光器采用2×1阵列的以布儒斯特角放置的片状Nd:YAG激光头模块，并采用氙灯泵浦方式，由平均功率为60 kW电池组电源供电；电源采用大电流恒流放电，对输出放电进行可编程控制。实验得到32 J的单脉冲输出，小信号增益系数为0.047 5 cm^-1；泵浦单脉冲运行，脉宽为1~5 ms时，输出能量呈线性增长；当重复频率为20 Hz时，5 ms脉宽比1 ms脉宽输出功率下降30%，其原因是布儒斯特角结构存在时，由热应力引起的热致双折射损耗造成输出下降。

Performances of repetition-rated output of multi-segment-aperture solid-state lasers

Based on multi-segment apertures and gain media of Nd:YAG slabs, a new design of solid-state laser oscillator and its preliminary experimental results are presented.The output characteristics of the laser are researched. 2×1 multi-segment apertures and gain media of Nd:YAG slabs module are applied to the laser which is supplied by a 60 kW battery-based power supply, which adopts a pattern of constant current discharge with high current, and outputs a programmable control wave profile. The single pulse with output of 32 J was obtained, and the small signal gain was 0.047 5 cm-1. The output results show that it is a linear relation of the output energy and the pumping pulse duration during a single shot. And the output energy of 5 ms pulse nearly falls off 30% than that of the 1 ms pulse in