Photorefractive hologram fixing by a 4 K cooldown to the phase transition in K1-xLixTa1-yNbyO3

Aharon J. Agranat*, Meir Razvag, Michal Balberg

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

13 Scopus citations

Abstract

A fixing process of photorefractive holograms is reported. The process is based on the formation of an ionic space charge which becomes mobile at the phase transition temperature. A fixed grating was formed in paraelectric potassium lithium niobate tantalate by a 4 K cooldown to Tc, and a warmup back to the paraelectric phase. The diffraction efficiency of the fixed grating was 66% of the original photorefractive space charge grating.

Original languageAmerican English
Pages (from-to)2469-2471
Number of pages3
JournalApplied Physics Letters
Volume68
Issue number18
DOIs
StatePublished - 1996

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