LD泵浦高功率高斜效率Nd:YVO_4声光调Q激光器  

Laser diode end-pumped accousto-optical Q-switched Nd:YVO_4 laser with high power and high slope efficiency

作　　者：余锦[1] 张雪[1] 刘洋[1] 樊仲维[1,2] 赵天卓[1] 麻云凤[1] 张晶[2] 王培峰[3,4] 

机构地区：[1]中国科学院光电研究院,北京100080 [2]北京国科世纪激光技术有限公司,北京100085 [3]中国科学院长春光学精密机械与物理研究所,长春130033 [4]中国科学院研究生院,北京100039

出　　处：《强激光与粒子束》2011年第2期285-289,共5页High Power Laser and Particle Beams

基　　金：国家高技术发展计划项目;国家自然科学基金项目(60927010);中国科学院光电研究院创新基金项目(AOE2009-002)

摘　　要：报道了采用激光二极管(LD)端面泵浦Nd:YVO4双端键合晶体高平均功率高斜效率1 064 nm声光调Q激光器。通过对大功率泵浦情况下激光晶体热透镜效应进行分析和估算,优化了模式匹配及热稳腔结构参数,实现了稳定的高功率高斜效率准连续脉冲激光输出。在泵浦功率46.8 W、最高重复频率50 kHz下,获得最大平均输出功率17.6 W,光-光转换效率为37.6%,斜效率达70.1%,脉冲宽度51.3 ns;在最低重复频率10 kHz下,获得最大单脉冲能量0.91 mJ,峰值功率为46.2 kW,脉冲宽度为19.8 ns。A high average output power,high slope efficiency acousto-optical Q-switched 1 064 nm laser is reported with a laser diode（LD） end-pumped Nd：YVO4 double-bonded crystal scheme.With the proper estimation of thermal lensing effects under intense pumping,the mode matching and thermally stable cavity parameters are discussed and optimized,and a stable high-power high-slope efficiency output is obtained.At the highest repetition rate of 50 kHz and pump power of 46.8 W,a maximum average output power of 17.6 W is achieved with optical conversion efficiency of 37.6%,slope efficiency of 70.1% and pulse width of 51.3 ns.At the lowest repetition rate of 10 kHz,a maximum single pulse energy of 0.91 mJ and peak power of 46.2 kW are measured with pulse width of 19.8 ns.

关 键 词：高斜效率 声光调Q激光器 双端键合晶体 端面泵浦 激光二极管 

分 类 号：TN248[电子电信—物理电子学]