Photorefractive properties of KTa1-XNbXO3 in the paraelectric phase Aharon Agranat, Victor Leyva, Koichi

Aharon Agranat, Victor Leyva, Koichi Sayano, Amnon Yariv

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2 Scopus citations

Abstract

We report the growth of doped Potassium Tantalate Niobate (KTN) crystals, and the characterization of their photorefractive properties m the paraelectric region. First the Top Seeded Solution Growth Method is reviewed and the growth process of a KTN:Cu, V crystal is described. Results of diffraction efficiency measurements of photorefractive gratings in these crystals at the paraelectric phase, are then presented. These experiments show high diffraction efficiencies, and indicate the possibility of amplitude modulation of the gratings by an external field. Results showing fixation of the gratings when the sample is close to the phase transition temperature are also described.

Original languageAmerican English
Pages (from-to)52-66
Number of pages15
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume1148
DOIs
StatePublished - 4 Jan 1990
Externally publishedYes

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