大口径薄片激光器失调输出特性  

Output characteristics of misaligned resonator for large-aperture thin disk laser

作　　者：朱海涛[1] 冯国英[1] 阴明[1] 高翔[1] 杨火木[1] 张凯[2] 陈念江[3] 周寿桓[1,3] 

机构地区：[1]四川大学电子信息学院,成都610064 [2]中国工程物理研究院应用电子学研究所,四川绵阳621900 [3]华北光电技术研究所,北京100015

出　　处：《强激光与粒子束》2011年第12期3307-3311,共5页High Power Laser and Particle Beams

基　　金：国家自然科学基金项目(60890200;10976017;10876022);固体激光技术国家级重点实验室基金项目

摘　　要：对大口径的薄片激光器的失调输出特性进行了理论和实验研究,V-型腔由平面输出耦合镜和凹面反射镜及孔径光阑组成。基于矩阵光学和失调衍射积分方程得到了激光器的功率失调曲线。实验测量了在200Hz泵浦频率下加入不同孔径光阑后谐振腔失调对输出功率的影响和谐振腔失调对光束质量的影响,以及在300Hz泵浦频率下输出功率分别与平面输出耦合镜和凹面反射镜失调的关系。实验结果表明:失调输出功率和失调角度成二次函数关系,失调容限和腔镜口径成正比,光束质量因子随失调角度的增大而变小。The output characteristics of misaligned resonator for large-aperture thin disk laser have been studied experimentally and theoretically.A plane output coupler S1,a concave mirror S2 and an aperture stop are arranged to define the V-shape resonator.The misalignment sensitivities of the output power are given by means of matrix optics and the misalignment diffraction integral equation.The misalignment effects of the resonator having a variable aperture stop diameter on output power and beam quality have been measured by tilt-angle measurement technique at 200 Hz pump frequency,as well as the output power relationship with the misalignments of mirror S1 and mirror S2 at 300 Hz pump frequency.The experimental results show that the output power is a quadratic function of the tilt angle,the misalignment tolerance is directly proportional to mirror diameter and the beam quality factor decreases as the tilt angle increases.

关 键 词：大口径薄片激光器 谐振腔失调 失调矩阵 光束质量 

分 类 号：TN248[电子电信—物理电子学]