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 hol...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.展开更多
基金supported by the National Natural Science Foundation of China(No. 52002271)CAS Special Research Assistant Project+2 种基金China Postdoctoral Science Foundation (No. 2021M703326)Key Foreign Cooperation Projects of Bureau of International Cooperation of Chinese Academy of Sciences(No. 181231KYSB20210001)Cooperation Project with Hong Kong,Macao,Taiwan supported by Science and Technology Commission of Shanghai Municipality(No. 22220760300)。
文摘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.
