title: Frequency-degenerate nonlinear light scattering in low-symmetry crystals.
abstract: A considerable distinction of light-induced scattering in optically biaxial crystals comes from the fact that the principal axes of the optical indicatrix do not coincide with the crystallographic directions. The study of photorefractive scattering in Sn2P2S6 (monoclinic symmetry) revealed the particular requirements as to light polarization for excitation of parametric scattering and the polarization inhomogeneity of wide-angle scattering.
authors.affiliation: Institute of Physics, National Academy of Sciences, 03 650 Kyiv, Ukraine. shumeluk@iop.kiev.ua
authors.forename: Alexandr
authors.initials: A
authors.lastname: Shumelyuk
authors.forename: Alexandr
authors.initials: A
authors.lastname: Volkov
authors.forename: Andreas
authors.initials: A
authors.lastname: Selinger
authors.forename: Mirco
authors.initials: M
authors.lastname: Imlau
authors.forename: Serguey
authors.initials: S
authors.lastname: Odoulov