【摘要】 设计了LD泵浦Cr4 + ∶YAG被动调Q的全固态Nd∶YAG脉冲红外激光器。腔外首先经过焦距为10 0mm的聚焦透镜 ,将 10 6 4nm的红外激光耦合到长为 9mm的KTP 2倍频晶体中 ,得到平均功率为 2 9mW的脉冲绿光。然后将 5 32nm的脉冲绿光经过焦距为 30mm的聚焦透镜 ,耦合到长为 4mm的BBO 4倍频晶体上 ,获得了峰值功率为 7.3W ,平均功率为 1.1mW ,重复频率为 12 .5kHz,脉冲宽度为 12ns的 2 6 6nm紫外激光 ,其绿光 紫外光的转换效率为 3.8%,红外光 紫外光的转换效率为 0 .7%。更多还原

【Abstract】 Passively Q-switched Cr 4+∶YAG/Nd∶YAG all-solid-state infrared laser,pumped by a diode laser,was designed.Then with a lens of 100mm focal length focusing the 1064nm IR laser to a 9mm KTP second-harmonic generation crystal,a green laser pulse was obtained with average output power of 29mW. At last,with a lens of 30mm focal length focusing the 532nm green laser to a 4mm length of BBO fourth-harmonic generation crystal,an ultraviolet laser pulse at 266nm was obtained with peak power of 7.3W,average output power of 1.1mW,repetition rate of 12.5kHz,pulse duration of 12ns. Ratio of green-ultraviolet power conversion is 3.8%,and that of infrared-ultraviolet power conversion is 0.7%.更多还原