Author:
Furukawa Yasunori,Kitamura Kenji,Hatano KazuoNiwa,Bernasconi Pietro,Montemezzani Germano,Günter Peter
Abstract
LiTaO3 single crystals with near-stoichiometric composition are grown using a double crucible
Czochralski method equipped with an automatic powder supply system. Their photorefractive
properties are compared with those of LiTaO3 crystals grown from the congruent composition melt.
Two beam coupling experiments show that nearly stoichiometric LiTaO3 crystals exhibit
considerably higher photorefractive gain, speed and sensitivity than conventional congruent crystals.
Due to the relatively large photoconductivity observed at near UV wavelengths, stoichiometric
crystals are further characterized by small photogalvanic fields, making them very attractive for
dynamic holography in this wavelength range.
Subject
General Physics and Astronomy,Physics and Astronomy (miscellaneous),General Engineering
Cited by
30 articles.
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