小型热传导冷却(Nd, Ce)：YAG激光器热稳定性研究

Study on thermal stability characteristic of miniature conductive cooling repetitive(5pps)(Nd,Ce)：YAG laser

摘要: 在小型Cr4+:YAG被动调Q热传导冷却(Nd,Ce):YAG激光器中,采用定向反射器取代平行平面腔中的全反射镜,大大提高了器件的热稳定性,获得了重复频率5pps的激光输出,单脉冲激光能量输出20～25mJ,调Q激光脉宽15ns,束散3～5mrad,工作温度范围-40℃～+55℃,激光器总长度小于130mm。

Abstract: In the miniature Cr4+:YAG passive Q-switched conductive cooling repetitive(Nd,Ce):YAG lasers,replacement of the 100% reflector of its plane-parallel resonator with a TIR(total internal reflection)prism,gives better thermal stability characteristic and the repetitive frequency reaches 5pps. Single laser pulse output gets to 20～25mJ with pulse width smaller than 15ns.The operation ambient temperature range reaches -40℃～+55℃.