Optical restoration of photorefractive holograms

P. Yeh*, C. Gu, C. J. Cheng, K. Y. Hsu

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

1 Citation (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 self-enhanced readout scheme. The results also provide an explanation for the formation of mutually pumped phase conjugation in terms of the amplification of an initial noise grating. The results are presented and discussed.

Original languageEnglish
Pages (from-to)511-514
Number of pages4
JournalApplied Physics B Lasers and Optics
Issue number5
Publication statusPublished - 1995 Nov
Externally publishedYes


  • 42.30
  • 42.40
  • 42.65

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)
  • General Physics and Astronomy


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