Development of nuclear pumped lasers (NPL) in the CFBR-Ⅱ reactor is briefly reviewed. The results of the two NPL experiments in CFBR-Ⅱ reactor are described. The first one focused on the principle of nuclear pumped laser, and 4-mW laser output power achieved. The second NPL experiment focused on the small signal gain and the efficiency of the nuclear pumped He-Ar-Xe gas mixture at 1.73 μm. The maximum laser power measured to be 45 mW when thermal neutron flux rate is 6.9 x 10~(14) cm~(-2)·s~(-1). The small signal gain at 1.73 μm by the Rigrod analysis method is to be 0.24%·cm~(-1), and the saturation intensity is fitted to be 36 W/cm~2.
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机译：简要回顾了CFBR-Ⅱ反应堆中核泵浦激光器（NPL）的发展。描述了两次在CFBR-Ⅱ反应堆中进行的不良实验室实验的结果。第一个重点是核泵浦激光器的原理，并实现了4 mW的激光器输出功率。第二个NPL实验集中在1.73μm的小信号增益和核泵浦的He-Ar-Xe气体混合物的效率上。当热中子通量率为6.9 x 10〜（14）cm〜（-2）·s〜（-1）时，最大激光功率为45 mW。用Rigrod分析法在1.73μm处的小信号增益为0.24％·cm〜（-1），饱和强度拟合为36W / cm〜2。
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