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Merging Geometric Phase and Plasmon Retardation Phase in Continuously Shaped Metasurfaces for Arbitrary Orbital Angular Momentum Generation
Guo, Yinghui1; Pu, Mingbo1; Zhao, Zeyu1; Wang, Yanqin1; Jin, Jinjin1; Gao, Ping1; Li, Xiong1; Ma, Xiaoliang1; Luo, Xiangang1
Source PublicationACS Photonics
Volume3Issue:11Pages:2022-2029
2016
Language英语
ISSN2330-4023
DOI10.1021/acsphotonics.6b00564
Indexed BySCI ; EI
WOS IDWOS:000388433100004
SubtypeJ
Abstract

Traditional technologies to generate and manipulate the orbital angular momentum (OAM) suffer from bulky size and do not lend themselves to nanophotonic systems. An ultrathin metasurface based on abrupt phase shift has recently been proposed as an alternative method. Nevertheless, gradient phase was generally approximated by multiple meta-atom/molecules with discrete levels of abrupt phase shift, which not only increases the design and fabrication complexity but also causes difficulties in obtaining simultaneous electrical and optical functionality. Furthermore, a discontinuous phase profile would introduce phase noise to the scattering fields and deteriorate the purity of the OAM beams. Here, we propose a wavefront engineering mechanism by virtue of the spin-orbit interaction in continuously shaped plasmonic metasurfaces, which offers a new approach to generate OAM modes of high purity. Equally important, a method producing arbitrary OAM topological charge, integral and fractional, is demonstrated by merging the plasmon retardation phase with the geometric phase in the proposed continuously shaped metasurfaces. The proposed approach is well supported by full-wave numerical simulations and experimental characterization of the fabricated structure in the visible regime. © 2016 American Chemical Society.

KeywordAngular Momentum Merging Momentum Phase Shift
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Cited Times:67[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ioe.ac.cn/handle/181551/8467
Collection微细加工光学技术国家重点实验室(开放室)
Affiliation1.State Key Laboratory of Optical Technologies on Nano-Fabrication and Micro-Engineering, Institute of Optics and Electronics, Chinese Academy of Sciences, P.O. Box 350, Chengdu
2.610209, China
Recommended Citation
GB/T 7714
Guo, Yinghui,Pu, Mingbo,Zhao, Zeyu,et al. Merging Geometric Phase and Plasmon Retardation Phase in Continuously Shaped Metasurfaces for Arbitrary Orbital Angular Momentum Generation[J]. ACS Photonics,2016,3(11):2022-2029.
APA Guo, Yinghui.,Pu, Mingbo.,Zhao, Zeyu.,Wang, Yanqin.,Jin, Jinjin.,...&Luo, Xiangang.(2016).Merging Geometric Phase and Plasmon Retardation Phase in Continuously Shaped Metasurfaces for Arbitrary Orbital Angular Momentum Generation.ACS Photonics,3(11),2022-2029.
MLA Guo, Yinghui,et al."Merging Geometric Phase and Plasmon Retardation Phase in Continuously Shaped Metasurfaces for Arbitrary Orbital Angular Momentum Generation".ACS Photonics 3.11(2016):2022-2029.
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