Phase encoding for sharper focus of the azimuthally polarized beam

被引:213
|
作者
Hao, Xiang [1 ]
Kuang, Cuifang [1 ]
Wang, Tingting [1 ]
Liu, Xu [1 ]
机构
[1] Zhejiang Univ, State Key Lab Modern Opt Instrumentat, Hangzhou 310027, Peoples R China
关键词
LIGHT; DIFFRACTION; RESOLUTION; FIELD;
D O I
10.1364/OL.35.003928
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
We demonstrate that a sharper focal spot area can be generated (0.147 lambda(2)) by using an azimuthally polarized beam propagating through a vortex 0-2 pi phase plate than for radial polarization (0.17 lambda(2)) or for linear polarization (0.26 lambda(2)) under the same condition. Further research illustrates that such optimistic results can still be expected when condition limitations are liberalized. This will facilitate new approaches to get superresolution in confocal systems. (C) 2010 Optical Society of America
引用
收藏
页码:3928 / 3930
页数:3
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