The fifth harmonic generation by mixing Nd:YAG laser fundamental and its fouth harmonic radiation using BBO crystal at room temperature is reported. The energy conversion efficiencies of fourth hamonic to fifth harmonic as high as 48% have been achieved.

• 本文报道了用BBO晶体对Nd:YAG激光器输出的1064nm光的五倍频；获得了213nm的紫外输出；266nm转换至213nm的转换效率达48%25.