基于Cr^(4+):YAG可饱和吸收体的高效Nd:YVO4被动调Q激光器

High Efficiency Passively Q-Switched Nd:YVO4Laser Based on Cr^(4+):YAG Saturable Absorber

设计一种紧凑的V型谐振腔结构,以Cr^(4+):YAG晶体作为可饱和吸收体研究808 nm激光二极管泵浦的1064 nm Nd:YVO_(4)被动调Q激光器且获得了稳定的调Q脉冲输出。当泵浦功率为19 W时,最大连续输出功率为8.35 W,相应的光-光转换效率为44%,斜效率为56.4%。插入Cr^(4+):YAG晶体后,在泵浦功率为19 W时,得到平均功率4 W、脉宽为24.3 ns、重复频率39.6 kHz、单脉冲能量为101μJ、最大峰值功率为4.15 kW的脉冲输出。

A compact V-shaped resonator structure was designed,and the 1064nm passively Q-switched Nd:YVO4laser pumped by 808nm diode laser was studied and stable Q-switched pulse output was obtained by using Cr^(4+):YAG crystal as a saturable absorber.The maximum continuous output power of 8.35Wwas obtained at the pump power of 19Wcorresponding to the light-to-light conversion efficiency of 44%and the slope efficiency of 56.4%.After inserting Cr^(4+):YAG crystal,the pulse output with an average power of 4W,pulse width of 24.3ns,repetition rate of 39.6kHz,single pulse energy of 101μJ,and the maximum peak power of 4.15kW was obtained at the pump power of 19W.