超短脉冲高斯光束经聚焦透镜的光场形式  

Focusing of Femtosecond Gaussian Beam by Lenses

作　　者：杨莉松[1] 王中阳[1] 王桂英[1] 徐至展[1] 

机构地区：[1]中国科学院上海光机所强光光学开放研究实验室,上海201800

出　　处：《中国激光》2001年第6期518-522,共5页Chinese Journal of Lasers

基　　金：国家自然科学基金 (项目批准号 :6 96 370 30及6 97770 0 4)资助课题

摘　　要：考虑到激光腔模中光腰的频率依赖性 ,得到了超短脉冲高斯光束经消色差透镜聚焦后光场的解析形式 ,并讨论了此时透镜群速度色散对光束聚焦性质的影响。分析了单透镜色差和群速度色散对超短脉冲高斯光束聚焦的时间分布及脉冲波面的影响 ;比较了消色差透镜及单透镜中脉冲初始光腰尺寸对聚焦的影响。Considering the wave number dependence of the waist size in laser resonator, the exact intensity solution of the pulse through achromat was obtained. The effect of group velocity dispersion on the focus was discussed. The influence of lens dispersion up to second order on the spatial and temporal intensity distribution of the femtosecond Gaussian beam was analyzed. The influence of input beam size on the maximum intensity in the focus of single lens and achromat was described.

关 键 词：超短脉冲高斯光束 光场形式 聚焦透镜 

分 类 号：O435[机械工程—光学工程]