Focusing properties of Fresnel zone plates with spiral phase

被引:33
|
作者
Zhang, Binzhi [1 ]
Zhao, Daomu [1 ]
机构
[1] Zhejiang Univ, Dept Phys, Hangzhou 310027, Peoples R China
来源
OPTICS EXPRESS | 2010年 / 18卷 / 12期
基金
中国国家自然科学基金;
关键词
X-RAY MICROSCOPY; OPTICAL VORTICES; RESOLUTION;
D O I
10.1364/OE.18.012818
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
Focusing properties of Fresnel zone plates with spiral phase with integer and fractional topological charges illuminated by plane wave are studied. Numerical results show that hollow beams can be generated and can also be controlled by the number of the zones and the topological charge, which implies the potential applications of such kind of zone plate in trapping and manipulating particles. (C) 2010 Optical Society of America
引用
收藏
页码:12818 / 12823
页数:6
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