首页 | 本学科首页   官方微博 | 高级检索  
     检索      

光束自聚焦的矢量理论研究
引用本文:季小玲,吕百达.光束自聚焦的矢量理论研究[J].强激光与粒子束,2001,13(1):0-8.
作者姓名:季小玲  吕百达
作者单位:1.中国科学院 上海光学精密机械研究所,高功率激光物理国家实验室,上海 201 800
基金项目:激光技术国家重点实验室基金!(9902),国家863激光技术领域资助课题!(863-410-1.2)
摘    要:基于矢量非傍轴非线性Schr-dinger方程,利用调制理论研究了光束的自聚焦特性,比较了非零电场散度项和非傍轴项在消除自聚焦崩塌方面的贡献。结果表明,引入两项之一都可使光束聚焦到一有限宽度后开始散焦,然后又自聚焦,如此作聚焦-散焦的周期性循环。但是,在光束自聚焦点附近,非零电场散度项的作用要强于非傍轴项。

关 键 词:自聚焦    矢量效应    非傍轴
文章编号:1001—4322(2001)01—0005—04
收稿时间:2000/7/11
修稿时间:2000年7月11日

Effect of an annular spherically aberrated lens on the super-Gaussian beam quality
JI Xiao-ling,LU Bai-da.Effect of an annular spherically aberrated lens on the super-Gaussian beam quality[J].High Power Laser and Particle Beams,2001,13(1):0-8.
Authors:JI Xiao-ling  LU Bai-da
Institution:1.National Laboratory on High Power Laser and Physics,Shanghai;Institute of Optics and Fine Mechanics,the Chinese Academy of Sciences P.O.Box 800-211,Shanghai 201800,China
Abstract:The power in the bucket (PIB) and β-parameter are chosen ascriteria for characterizing the beam quality, the effect of the spherical aberration coefficient and obscure ratio of an annular lens on the super-Gaussian beam quality is analyzed. It is shown that there are different PIB curves at the geometrical and real focal planes, and by a suitable choice of the parameter of negative spherically aberrated annular lens the better power/energy focusability can be achieved as compared with the annular lens without spherical aberration.
Keywords:super-Gaussian beam  beam quality  spherical aberration  power in the bucket  β-parameter
本文献已被 CNKI 维普 万方数据 等数据库收录!
点击此处可从《强激光与粒子束》浏览原始摘要信息
点击此处可从《强激光与粒子束》下载免费的PDF全文
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号