位相畸变三次谐波转换  

Third Harmonic Conversion of Aberrated Laser Beam

作　　者：侯静[1] 凌宁[1] 等 

机构地区：[1]中国科学院光电技术研究所,四川成都610209

出　　处：《中国激光》2002年第6期525-529,共5页Chinese Journal of Lasers

摘　　要：研究了KDP晶体TypeⅠ /TypeⅡ角度匹配的三倍频方案中 ,离散效应和基波位相畸变对三次谐波的影响。重点考虑了位相畸变所带来的在光束全口径上e光折射率以及相位失配等的变化 ,分析了功率密度分布为超高斯型且具有Zernike多项式表述的各阶像差的光束的三次谐波转换过程 ,得到了不同像差对三次谐波横向光功率密度分布的影响以及转换效率变化曲线。The third harmonic conversion of Type Ⅰ/Type Ⅱ angle duning scheme of KDP is affected by aberrations of fundamental waves is studied, including the nonuniform distribution across the aperture of refactive index, phase mismatch and etc., which are deduced by aberrations of fundamental waves. The results of transverse intensity distributions and conversion efficiencies of super Gaussian beam with aberrations of Zernike polynomials are presented.

关 键 词：位相畸变 三次谐波 转换 光功率 密度分布 

分 类 号：O43[机械工程—光学工程]