• Chinese Optics Letters
  • Vol. 22, Issue 8, 080502 (2024)
Zhichang Mo1,2,3, Yi Chen1, Xiangyu Zhu1, Zhouhao Zhang1,4..., Dawei Li1,2,3, Jianda Shao1,2,3,5, Yuanan Zhao1,2,3,* and Jianguo Wang1,2,3,**|Show fewer author(s)
Author Affiliations
  • 1Laboratory of Thin Film Optics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
  • 2Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
  • 3Key Laboratory of Materials for High Power Laser, Chinese Academy of Sciences, Shanghai 201800, China
  • 4Henan Key Laboratory of Infrared Materials & Spectrum Measures and Applications, School of Physics, Henan Normal University, Xinxiang 453007, China
  • 5Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou 310024, China
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    DOI: 10.3788/COL202422.080502 Cite this Article Set citation alerts
    Zhichang Mo, Yi Chen, Xiangyu Zhu, Zhouhao Zhang, Dawei Li, Jianda Shao, Yuanan Zhao, Jianguo Wang, "Optical secret sharing by multi-step liquid crystal planar doublet panning and coupling," Chin. Opt. Lett. 22, 080502 (2024) Copy Citation Text show less

    Abstract

    The hologram, which is formed by phases coupled through cascade devices for secret information sharing, still carries a cracking risk. We propose a liquid crystal planar doublet as the information carrier, and new holograms generated by the new coupled phases when the relative displacements of the different liquid crystal layers change. The designed geometrical phases are generated by an optimized iterative restoration algorithm, and each holographic image formed by these phases is readable. This scheme achieves an increase in the capacity of the stored secret information and provides more misdirection, which is expected to have potential value in optical steganography and storage.
    [ExoutEyout]=12(cos  δ2[1αi]isin  δ2eiα·2φ[1αi]),

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    12(icosδ12sinδ22eiα·2φ2+cosδ12cosδ22).

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    12(isinδ12cosδ22eiα·2φ1+sinδ12sinδ22eiα·2(φ1φ2)).

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    Zhichang Mo, Yi Chen, Xiangyu Zhu, Zhouhao Zhang, Dawei Li, Jianda Shao, Yuanan Zhao, Jianguo Wang, "Optical secret sharing by multi-step liquid crystal planar doublet panning and coupling," Chin. Opt. Lett. 22, 080502 (2024)
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