Nd:YVO_4与Nd:YAG主动调Q脉冲参数模拟  

Simulation of actively Q-switched pulse parameters in Nd:YVO_4 and Nd:YAG

作　　者：董小龙[1] 高兰兰[1] 张帆[1] 焦石[1] 纪冠东 

机构地区：[1]长春理工大学理学院,吉林长春130022

出　　处：《红外与激光工程》2015年第7期1986-1990,共5页Infrared and Laser Engineering

摘　　要：利用调Q速率方程,确定了最优输出耦合反射率,最大脉冲能量,最大峰值功率和脉冲宽度与无量纲变量z的关系,并分析了谐振腔往返损耗、谐振腔增益和反转衰减因子分别对Nd:YVO4与Nd:YAG调Q脉冲参数的影响。结果表明:最优输出耦合反射率和脉冲宽度随谐振腔往返损耗的增大而减小,最大脉冲能量和最大峰值功率受反转衰减因子的影响很大,并随反转衰减因子的增大而减小。通过确定z值可以将调Q脉冲参数具体化。Using Q-switched rate equations, the relationship among the optimum reflectivity, maximum pulse energy, largest peak power, pulse width and the dimensionless variable z was analyzed, and the influence of the condition of different cavity roundtrip dissipative loss, cavity gain and inversion reduction factor on actively Q-switched pulse parameters in Nd：YVO4 and Nd：YAG was also analyzed,respectively. The modeling results indicate that the optimum reflectivity and pulse width decrease with the increase of cavity roundtrip dissipative loss, and the maximum pulse energy and largest peak power decrease with the increase of inversion reduction factor which affects maximum pulse energy and largest peak power greatly. One can make the Q-switched pulse parameters embodied through the certain value of z.

关 键 词：主动调Q 脉冲参数模拟 反转衰减因子 无量纲变量z 

分 类 号：O437[机械工程—光学工程]