title: Two-wave mixing in (111)-cut Bi12SiO20 and Bi12TiO20 crystals: characterization and comparison with the general orientation
abstract: We study the process of two-wave mixing (TWM) in optically active, electro-optic, and elasto-optic BSO and BTO crystals. We calculate the TWM gain for arbitrary crystal cut and optimize the energy exchange. For the (111) cut, by choosing an appropriate coordinate system, we obtain a simple analytical solution for the components of the coupling tensor which allows us to optimize analytically the TWM gain with respect to the grating orientation and the initial light polarization.
authors.affiliation: Department of Physics, University of Osnabruck, D-49069 Osnabruck, Germany.
authors.initials: VP
authors.lastname: Kamenov
authors.initials: Y
authors.lastname: Hu
authors.initials: E
authors.lastname: Shamonina
authors.initials: KH
authors.lastname: Ringhofer
authors.initials: VY
authors.lastname: Gayvoronsky