Pancharatnam–Berry phase reversal via opposite-chirality-coexisted superstructures

Lin Zhu; Chun-Ting Xu; Peng Chen; Yi-Heng Zhang; Si-Jia Liu; Quan-Ming Chen; Shi-Jun Ge; Wei Hu; Yan-Qing Lu

doi:10.1038/s41377-022-00835-3

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Pancharatnam–Berry phase reversal via opposite-chirality-coexisted superstructures

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- Pancharatnam–Berry phase reversal via opposite-chirality-coexisted superstructures
- Light: Science & Applications Vol. 11, Issue 6, Pages: 1186-1193(2022)
- Affiliations：
  
  National Laboratory of Solid State Microstructures, Key Laboratory of Intelligent Optical Sensing and Manipulation, College of Engineering and Applied Sciences, and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, 210093 Nanjing, China
- Author bio：
  
  Peng Chen (chenpeng@nju.edu.cn)
  Yan-Qing Lu (yqlu@nju.edu.cn)
- Funds：
- DOI：10.1038/s41377-022-00835-3
  CLC：
- Published：30 June 2022，
  
  Published Online：12 May 2022，
  
  Received：27 January 2022，
  
  Revised：28 April 2022，
  
  Accepted：30 April 2022
- Accepted：
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Zhu, L. et al. Pancharatnam–Berry phase reversal via opposite-chirality-coexisted superstructures. Light: Science & Applications, 11, 1186-1193 (2022).
DOI：

Zhu, L. et al. Pancharatnam–Berry phase reversal via opposite-chirality-coexisted superstructures. Light: Science & Applications, 11, 1186-1193 (2022). DOI： 10.1038/s41377-022-00835-3.

摘要

Abstract

Recently discovered reflective Pancharatnam–Berry phase (PB phase) from chiral anisotropic media (e.g.

cholesteric liquid crystal

CLC) has aroused great interest in the emerging frontier of planar optics. However

the single chirality of common CLCs results in the intrinsic limitation of the same spin-selective PB phase manipulation

which means the reversal of the input spin cannot realize the conjugated PB phase. In this work

an innovative scheme based on opposite-chirality-coexisted superstructures is proposed to simultaneously modulate orthogonal circular polarization and get PB phase reversal. Through refilling CLC into a washed-out polymer network with opposite chirality and delicate photo-patterned structures

reflective optical vortex (OV) with opposite topological charges and vector beams with conjugated spiral PB phases are efficiently generated depending on the incident polarization. Furthermore

OV holograms are encoded to reconstruct polarization-selective OV arrays

indicating the strong capability of such opposite-chirality-coexisted anisotropic media. This work provides a new compact platform for planar optics

and sheds light on the architectures and functionalities of chiral superstructures.

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references

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