期刊
OPTIK
卷 134, 期 -, 页码 227-232出版社
ELSEVIER GMBH, URBAN & FISCHER VERLAG
DOI: 10.1016/j.ijleo.2017.01.052
关键词
Vector beam; Pancharatnam-Berry phase; Jones matrix
类别
资金
- National Natural Science Foundation of China [11547017, 11547018]
- Natural Science Foundation of Hubei Province [2014CFB578]
- Hubei Key Laboratory of Quality Control of Characteristic of Fruits and Vegetables, Hubei Engineering University [2016K01]
In this work, we propose a method for generating double-ring-shaped cylindrical vector beams by modulating Pancharatnam-Berry phase (PBP). The theoretical analysis shows that the output field can be expressed as the coherent superposition of two circularly polarized Laguerre-Gaussian components with opposite polarization handness and opposite helical index when a linearly polarized fundamental Gaussian beam inputs the metasurface designed based on PBP. Such a superposition of Laguerre-Gaussian modes forms a double ring-shaped cylindrical vector beam. Additionally, the local polarization orientation can be manipulated by changing the polarization angle of the input field. Our experimental results agree well with the theoretical expectation. We believe that PBP provides an extra choice to manipulate the phase and polarization of optical field. (C) 2017 Elsevier GmbH. All rights reserved.
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