Abstract
Ferroelectrics, such as BaTiO3, have large electrooptic coefficients which make them useful photorefractive materials. Diffraction efficiencies in photorefractive materials are improved by the application of electric fields. In ferroelectrics, as in nonferroelectrics, the improvement in diffraction efficiency is attributable to increased drift. However in ferroelectrics at least one other mechanism contributes to the effect of electric fields on beam coupling. When an electric field is applied to a ferroelectric, even at room temperature, some polarization reversal (reversal of the c axis) takes place. Both mechanisms can cause the direction of optical gain to switch. We present a theory of the interaction of electric fields with ferroelectric materials and the consequences of these interactions on optical beam coupling via two-wave mixing.
© 1986 Optical Society of America
PDF ArticleMore Like This
Duncan T. H. Liu, Li-Jen Cheng, and Jae-Hoon Kim
TuA5 Photorefractive Materials, Effects, and Devices II (PR) 1991
J. G. Murillo
661 Photorefractive Effects, Materials, and Devices (PR) 2001
Ruchi Singh, R.A. Yadav, and D.P. Singh
T3A.35 International Conference on Fibre Optics and Photonics (Photonics) 2014