My. Goulkov et al., POLARIZATION-ANISOTROPIC SCATTERING LINES IN LINBO3, Applied physics. B, Photophysics and laser chemistry, 56(4), 1993, pp. 223-228
Lines of light-induced scattering with extraordinary polarization from
two ordinary polarized pump waves in LiNbO3:Fe crystals are observed.
A nonlinear mixing of four copropagating waves in the crystal with ph
otovoltaic charge transport is shown to be the reason for parametric a
mplification of the seed radiation scattered from optical imperfection
s of the sample.