A slant grating was recorded with two laser beams incident on photorefractive crystal in an external dc electric field.Two-dimensional perturbative analytical solution for the first two-order space-charge field for st...A slant grating was recorded with two laser beams incident on photorefractive crystal in an external dc electric field.Two-dimensional perturbative analytical solution for the first two-order space-charge field for steady-state photorefractive slant grating recording has been obtained.It is shown that the inclusion of the longitudinal component of the space-charge field during photorefractive two-wave coupling can predict reduction of the fundamental harmonic and enhancement or reduction of the second-order harmonic for various applied field strength and various grating slant angles.The dependence of the first two-order harmonics on the slant angle and on the applied field strength is examined.展开更多
基金Supported by the Natural Science Foundation of Heilongjiang Province。
文摘A slant grating was recorded with two laser beams incident on photorefractive crystal in an external dc electric field.Two-dimensional perturbative analytical solution for the first two-order space-charge field for steady-state photorefractive slant grating recording has been obtained.It is shown that the inclusion of the longitudinal component of the space-charge field during photorefractive two-wave coupling can predict reduction of the fundamental harmonic and enhancement or reduction of the second-order harmonic for various applied field strength and various grating slant angles.The dependence of the first two-order harmonics on the slant angle and on the applied field strength is examined.
