A method for generating double-ring-shaped vector beams

We propose a method for generating double-ring-shaped vector beams. A step phase introduced by a spatial light modulator（SLM） first makes the incident laser beam have a nodal cycle. This phase is dynamic in nature because it depends on the optical length. Then a Pancharatnam–Berry phase（PBP） optical...

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Bibliographic Details
Published inChinese physics B Vol. 25; no. 7; pp. 220 - 224
Main Author 陈欢 凌晓辉 陈知红 李钱光 吕昊 余华清 易煦农
Format Journal Article
LanguageEnglish
Published 01.07.2016
Subjects
Berry相位
光学长度
几何相位
局域极化
激光束
环形
矢量
空间光调制器
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ISSN1674-1056
2058-3834
DOI10.1088/1674-1056/25/7/074201

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Summary:We propose a method for generating double-ring-shaped vector beams. A step phase introduced by a spatial light modulator（SLM） first makes the incident laser beam have a nodal cycle. This phase is dynamic in nature because it depends on the optical length. Then a Pancharatnam–Berry phase（PBP） optical element is used to manipulate the local polarization of the optical field by modulating the geometric phase. The experimental results show that this scheme can effectively create double-ring-shaped vector beams. It provides much greater flexibility to manipulate the phase and polarization by simultaneously modulating the dynamic and the geometric phases.
Bibliography:vector beam Pancharatnam–Berry phase element geometric phase
11-5639/O4
We propose a method for generating double-ring-shaped vector beams. A step phase introduced by a spatial light modulator（SLM） first makes the incident laser beam have a nodal cycle. This phase is dynamic in nature because it depends on the optical length. Then a Pancharatnam–Berry phase（PBP） optical element is used to manipulate the local polarization of the optical field by modulating the geometric phase. The experimental results show that this scheme can effectively create double-ring-shaped vector beams. It provides much greater flexibility to manipulate the phase and polarization by simultaneously modulating the dynamic and the geometric phases.
ISSN:1674-1056
2058-3834
DOI:10.1088/1674-1056/25/7/074201