外腔抽运SrWO_4反斯托克斯拉曼激光器  

Extracavity Pumped SrWO_4 Anti-Stokes Raman Lasers

作　　者：王聪[1] 张行愚[1] 王青圃[1] 丛振华[1] 刘兆军[1] 韦卫[1] 陈晓寒[1] 李平[1] 涂朝阳[2] 

机构地区：[1]山东大学信息科学与工程学院山东省激光技术与应用重点实验室,山东济南250100 [2]中国科学院福建物质结构研究所,福建福州350002

出　　处：《中国激光》2014年第3期39-42,共4页Chinese Journal of Lasers

基　　金：国家自然科学基金(11174185;11204160)

摘　　要：报道了外腔抽运的969nm SrWO4反斯托克斯拉曼激光器的特性。利用主动调Q Nd:YAG激光器产生的1064nm激光作为抽运源,SrWO4拉曼谐振腔的光轴与抽运光的传播方向偏离一个角度,实现了抽运光、一阶斯托克斯光和一阶反斯托克斯光之间的非共线相位匹配,得到了一阶反斯托克斯光和一至三阶斯托克斯光的输出,测量了输出激光的脉冲能量、时间和光谱特性。当抽运光能量为120mJ时获得的969nm反斯托克斯光的最大输出能量为0.74mJ,脉冲宽度为3.9ns。同时,获得的斯托克斯光的总能量为23.9mJ,其中1323nm二阶斯托克斯光的输出能量为19.6mJ。由抽运光向斯托克斯光和反斯托克斯光转换的总效率为20.5%。The characteristics of an extracavity pumped SrW04 anti-Stokes Raman lasers at 969 nm are studied. The SrWO4 Raman resonator is pumped by an actively Q-switched Nd： YAG laser at 1064 nm with its axis tilted from the pumping laser direction. The non-collinear phase matching between the pumping radiation, the generated first Stokes and the first anti-Stokes radiations are achieved. Besides the first anti-Stokes laser radiation, three orders of Stokes laser radiations are generated simultaneously. The output energy, temporal and spectral information of the output laser radiations are investigated. At the highest pumping laser energy of 120 rnJ, the highest energy of the anti- Stokes radiation is 0. 74 mJ with the pulse width of 3. 9 ns. Meanwhile, the total output energy of the Stokes radiations is 23. 9 mJ with 19. 6 mJ of 1323 nm second Stokes component. The conversion efficiency from the pumping radiation to the Stokes and anti-Stokes radiations is 20.5 %.

关 键 词：激光器 反斯托克斯激光器 四波混频 SrWO4 晶体 相位匹配 受激拉曼散射 

分 类 号：TN248[电子电信—物理电子学]