Focusing of partially coherent vortex beams by an aperture lens

被引：0
|
作者：
Rao Lian-Zhou
Pu Ji-Xiong [1 ]
机构：
[1] Huaqiao Univ, Dept Elect Sci & Technol, Quanzhou 362021, Peoples R China
[2] Sanming Univ, Dept Phys & Electromech Engn, Sanming 365004, Peoples R China
来源：
CHINESE PHYSICS LETTERS | 2007年 / 24卷 / 05期
关键词：
D O I：
暂无
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The focusing properties of partially coherent vortex wave fields are studied, Expressions are derived for the intensity distribution and the degree of coherence near the geometrical focus. It is found that the size of coherence vortex dark core in the focal region depends on the topological charges and normalized coherence lengths. It is found that the desired vortex dark core near the geometrical focus can be generated by choosing appropriate values of parameters. The degree of coherence possesses a pair of phase singularities regions in the geometrical focus neighbourhood.
引用
收藏
页码：1252 / 1255
页数：4
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