Hologram enhancement in photorefractive media

Pochi Yeh, Claire Gu, Chau-Jern Cheng, Ken Y. Hsu

    Research output: Contribution to journalArticle

    7 Citations (Scopus)


    We consider the possibility of restoration and/or enhancement of decaying holograms in photorefractive media by using a simple optical readout in conjunction with a phase conjugator. The results indicate that extremely weak holograms can be enhanced provided that the two-beam coupling is sufficiently strong. Steady-state photorefractive holograms can be maintained continuously without decay by using a properly designed readout scheme. The result also provides an explanation for the formation of mutually pumped phase conjugation in terms of the amplification of initial noise gratings.

    Original languageEnglish
    Pages (from-to)2204-2212
    Number of pages9
    JournalOptical Engineering
    Issue number8
    Publication statusPublished - 1995 Aug 1


    ASJC Scopus subject areas

    • Atomic and Molecular Physics, and Optics
    • Engineering(all)

    Cite this

    Yeh, P., Gu, C., Cheng, C-J., & Hsu, K. Y. (1995). Hologram enhancement in photorefractive media. Optical Engineering, 34(8), 2204-2212.