堆泵浦^3He—Ar—Xe体系的激光原理性实验

PRINCIPLE TESTS OF REACTOR PUMPED LASER OF ￣3He-A-Xe SYSTEM

介绍了在ＣＦＢＲ－Ⅱ脉冲堆上进行的￣３Ｈｅ─Ａｒ─Ｘｅ体系的激光演示实验。当热中子注量率６×１０￣（１４）／ｃｍ￣２·ｓ，气体组配￣３Ｈｅ：Ａｒ：Ｘｅ＝３４．７：３４．７：０．２６７（ｋＰａ）时，获得波长λ＝１．７３μｍ、脉宽（ＦＷＨＭ）平均值７３８μｓ、峰值功率为毫瓦级的激光输出。同时对测得的光信号及其特性进行了分析。

Lasing tests of a ￣3He-Ar-Xe system ￣3He:Ar:Xe=34.7:34.7:0267(KPa) on the CFBR-Ⅱ reactor is introduced.The wavelength and FWHM of the laser we observed are l.73μm and 738μs. The peak power is milliwatts when the flux of thermal neutron is 6×10￣(14)/cm￣2·s. The laser characterisitics are also analysised.