Cylindrical vector axisymmetric Bessel-modulated Gaussian beam

被引：11
|
作者：
Gao, Xiumin [1 ]
Zhan, Qiufang [2 ]
Li, Jinsong [3 ]
Hu, Song [1 ]
Wang, Jian [1 ]
Zhuang, Songlin [4 ]
机构：
[1] Hangzhou Dianzi Univ, Elect & Informat Coll, Hangzhou 310018, Peoples R China
[2] China Stand Software Co Ltd, Shanghai 200030, Peoples R China
[3] China Jiliang Univ, Coll Opt & Elect, Hangzhou 310018, Peoples R China
[4] Shanghai Univ Sci & Technol, Shanghai 200093, Peoples R China
来源：
OPTICAL AND QUANTUM ELECTRONICS | 2009年 / 41卷 / 05期
基金：
中国博士后科学基金; 中国国家自然科学基金;
关键词：
Focusing properties; Vector beam; Axisymmetric Bessel-modulated Gaussian beam; Vector diffraction theory; FOCAL SHIFT; PROPAGATION;
D O I：
10.1007/s11082-010-9358-2
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Focusing properties of the cylindrical vector axisymmetric Bessel-modulated Gaussian beam with quadratic radial dependence (QBG beam) in high numerical aperture system is investigated theoretically by vector diffraction theory. Results show that intensity distribution in focal region can be altered considerably by beam parameter mu and polarization angle. Polarization angle may adjust transverse intensity distribution, for instance from one focal spot to one ring shape. While mu alters axial intensity distribution remarkably, focal splitting may occur with tunable focal shift, and real value mu also may induce local intensity minimum. For certain case, with increasing imaginary value mu, transverse focal spot shrinks accompanied with higher full width half maximum of axial intensity distribution.
引用
收藏
页码：385 / 396
页数：12
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