Crystal Growth, Processing, And Characterization Of Photorefractive BaTiO3

Barry A Wechsler; Marvin B Klein; Daniel Rytz

doi:10.1117/12.939623

9 March 1987 Crystal Growth, Processing, And Characterization Of Photorefractive BaTiO3

Barry A Wechsler, Marvin B Klein, Daniel Rytz

Proceedings Volume 0681, Laser and Nonlinear Optical Materials; (1987) https://doi.org/10.1117/12.939623
Event: 30th Annual Technical Symposium, 1986, San Diego, United States

Abstract

The development of practical devices utilizing the photorefractive effect in BaTiO3 depends upon the availability of single crystals with improved properties. In order to achieve this goal, we are pursuing a program involving crystal growth, characterization, and modeling. High quality, nominally undoped BaTiO3 crystals have been prepared by the top-seeded solution growth method and have photorefractive properties similar to those of commercial crystals. Models of the photorefractive effect suggest that improvements in the response time may be achieved by heating the crystal in a reducing atmosphere to convert to electron photoconductivity. Experiments with a commercial crystal whose major transition metal impurity was Fe resulted in a factor of 10 improvement in its response time, but at the expense of increased dark conductivity. Other approaches to reduce the response time are discussed.

Citation Download Citation

Barry A Wechsler, Marvin B Klein, and Daniel Rytz "Crystal Growth, Processing, And Characterization Of Photorefractive BaTiO3", Proc. SPIE 0681, Laser and Nonlinear Optical Materials, (9 March 1987); https://doi.org/10.1117/12.939623

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