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Photorefractive two beam coupling characterization of a Barium-Calcium titanate crystal

Abstract : We present two beam coupling characterization of Ba0.77Ca0.23TiO3, a ferroelectric material with no phase transition around room temperature that shows high photorefractive gain (7cm-1 with ordinary polarization and 15cm-1 with extraordinary polarization). We measure the electrooptic coefficients of Ba0.77Ca0.23TiO3. These values are compared to estimated theoretical values, calculated using a model that allows to deduce the tetragonal phase parameter (Pockels and piezoelectrics coefficients) from the parameters of the high temperature cubic phase (Kerr and electrostriction coefficients)
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Contributor : Marie-Laure Edwards Connect in order to contact the contributor
Submitted on : Friday, April 6, 2012 - 6:24:54 PM
Last modification on : Wednesday, September 16, 2020 - 5:43:04 PM
Long-term archiving on: : Wednesday, December 14, 2016 - 8:31:09 PM


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Sylvie Bernhardt, Philippe Delaye, H. Veenhuis, D. Rytz, Gérald Roosen. Photorefractive two beam coupling characterization of a Barium-Calcium titanate crystal. Applied Physics B - Laser and Optics, Springer Verlag, 2000, 70, pp.789-795. ⟨10.1007/s003400050010⟩. ⟨hal-00686038⟩



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