Duplication of phase key for random-phase-encrypted volume holograms

Wei Chia Su, Ching Cherng Sun, Yu Cheng Chen, Yueh Ouyang

Research output: Contribution to journalArticlepeer-review

18 Scopus citations


Holographic memory encrypted by an optical random-phase key and decrypted by either the original phase key or a duplicate key is proposed and demonstrated. The duplicate key is made by recording the encryption wave front with angle multiplexing during writing of the hologram. The amount of three-dimensional shifting that is tolerable in the duplicate key is analyzed.

Original languageEnglish
Pages (from-to)1728-1733
Number of pages6
JournalApplied Optics
Issue number8
StatePublished - 10 Mar 2004


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