摘要
采用1.06μm调Q激光脉冲抽运Cr4+:YAG晶体,实现Cr4+:YAG激光器的增益开关运转。当输出镜透过率为3%,抽运能量为85mJ时,发射中心波长为1.44μm的激光脉冲,脉冲宽度和能量分别为12ns和2.84mJ,光-光转换效率为3.3%。实验上比较了采用不同透过率的输出镜时,Cr4+:YAG激光器的输出能量和转换效率与抽运能量的关系,以及不同抽运能量下的1.44μm激光脉冲的宽度和建立时间。结果表明,随着抽运能量的增加,脉冲宽度和建立时间减小;转换效率在较大抽运能量时下降;对此进行了合理的理论分析。
The gain-switched Cr^4＋ ： YAG laser pumped by the Q-switched laser pulse at 1.06μm is reported. When the pump energy was 85 mJ and transmission of the output coupler was 3% ,the pulse duration and output energy of the laser pulse at 1.44μm center wavelength were 12 ns and 2.84 mJ respectively, and the transfer efficiency was 3.3%. In experiment, the relation of output energy and transfer efficiency versus pump energy was studied for different transmission of the output coupler, and the pulse duration and build-up time of 1.44μm laser pulse were also compared for different pump energy. The experimental result showed that the pulse duration and build-up time of 1.44μm laser pulse decreased with the pump energy increasing, and the transfer efficiency dropped under the larger pump energy. The result was analyzed theoretically.
出处
《应用激光》
CSCD
北大核心
2006年第3期163-166,共4页
Applied Laser
基金
国务院侨办科研基金资助项目(05QZR11)
