Generation and self-healing of a radially polarized Bessel-Gauss beam

被引：83
|
作者：
Wu, Gaofeng
Wang, Fei [1 ]
Cai, Yangjian
机构：
[1] Soochow Univ, Sch Phys Sci & Technol, Suzhou 215006, Peoples R China
来源：
PHYSICAL REVIEW A | 2014年 / 89卷 / 04期
基金：
中国国家自然科学基金;
关键词：
CYLINDRICAL VECTOR BEAMS; NONDIFFRACTING BEAMS; DIFFRACTION; LIGHT; RECONSTRUCTION; PROPERTY; TRANSFORMATION; PROPAGATION; SCALAR;
D O I：
10.1103/PhysRevA.89.043807
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We report experimental generation of a radially polarized Bessel-Gauss (RPBG) beam of order 1 with the help of a spatial light modulator, a spiral phase plate, and a radial polarization converter. Furthermore, we carry out a comparative study of the self-healing properties of a RPBG beam and a linearly polarized Bessel-Gauss (LPBG) beam which are blocked by a sector-shaped opaque obstacle both experimentally and numerically. Our results clearly show that the self-healing ability of a RPBG beam indeed is superior to that of a LPBG beam, and some physical interpretations are given. Our results will be useful for particle trapping and microscopy.
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页数：7
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