A Miniaturized Polymer Grating for Topological Order Detection of Cylindrical Vector Beams

Polarization topological order of a cylindrical vector beam (CVB) can be defined as the repetition number of 360° polarization state change along the azimuthal axis, with its sign denoting the rotating direction of the polarization. In order to detect CVBs with different order, a miniaturized polyme...

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Bibliographic Details
Published in:IEEE photonics technology letters 2016-12, Vol.28 (24), p.2799-2802
Main Authors: Xie, Zhenwei, Lei, Ting, Weng, Xiaoyu, Du, Luping, Gao, Shecheng, Yuan, Yangsheng, Feng, Shengfei, Zhang, Yan, Yuan, Xiaocong
Format: Article
Language:English
Subjects:
Beams (radiation)
CVB detection
Diffraction
Diffraction gratings
Gratings
optical diffraction
Optical vortices
Polarization
Polarizers
polymer grating
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Summary:Polarization topological order of a cylindrical vector beam (CVB) can be defined as the repetition number of 360° polarization state change along the azimuthal axis, with its sign denoting the rotating direction of the polarization. In order to detect CVBs with different order, a miniaturized polymer grating is proposed and demonstrated. The grating is almost pure phase modulated and polarization independent. The CVB modes with different orders or with the same order but opposite sign can easily be separated by adding a quarter wave plate and a polarizer. The experimental results are consistent with the theoretical predictions, thus validating our proposed method.
ISSN:1041-1135
1941-0174
DOI:10.1109/LPT.2016.2623326