角锥阵列改善固体热容激光器光束质量  

Improvement of beam quality of heat capacity laser with a cube corner array

作　　者：蒋东镔[1] 徐美健[1] 胡东霞[1] 段文涛[1] 蒋新颖[1] 於海武[1] 

机构地区：[1]中国工程物理研究院激光聚变研究中心,四川绵阳621900

出　　处：《强激光与粒子束》2008年第8期1257-1260,共4页High Power Laser and Particle Beams

基　　金：中国工程物理研究院基金资助课题(Z0405)

摘　　要：为改善光束远场质量,探索研究了角锥反射器的应用,利用角锥棱镜的准相位共轭特性,将角锥棱镜阵列作为热容激光器的后腔镜,抑制腔内波前畸变,并通过数值模拟计算对角锥阵列的单元边长进行优化设计。实验结果表明:角锥阵列对光束远场质量有明显的改善,当角锥阵列的单元边长为4 mm时,实现光束远场7倍衍射极限输出。For improving the beam quality, the application of cube corners reflector was studied. The cube corners reflector was used as the cavity mirror, with use of the quasi-phase conjugation characteristics of the cube corners, the wave-front aberra- tion of resonator cavity was restrained. The element side length of the cube corner array is optimized for the actual resonator con- figuration. The experimental results show that the cube corner array was effective in improving the far-field beam quality. When the element side length of the cube corner array is 4 mm, the far-field of laser output obtains the seven times diffraction limits.

关 键 词：固体热容激光器 角锥阵列 准相位共轭 光束质量 

分 类 号：TN248.1[电子电信—物理电子学]