K Walsh, AK Powell, C Stace, TJ Hall - JOSA B, 1990 - opg.optica.org
Solutions to the band-transport equations are developed to include effects on the amplitude, dynamics, and spatial-frequency response of the space-charge field when periodic or dc …
The steady-state and dynamic behavior of absorption and phase gratings in semi-insulating GaAs and InP have been studied by four-wave mixing. These measurements permit …
Two coherent light beams can couple in any absorbing material owing to a light-induced modulation of the material's dielectric constant. In photorefractive crystals the coupling …
K Shcherbin, S Odoulov, R Litvinov, E Shandarov… - JOSA B, 1996 - opg.optica.org
Because of the light-induced bleaching of GaAs at λ= 1.064 µm, the amplitude gratings strongly affect the photorefractive recording in this material. We extract two contributions that …
We describe how optical beams from a mode-locked laser will couple in a photorefractive crystal. We show that the two-beam-coupling gain coefficient is proportional to the square of …
Two optical beams can couple in a photorefractive crystal without using the electro-optic effect. Beam coupling is due to a spatially modulated absorption caused by the …
AA Freschi, J Frejlich - JOSA B, 1994 - opg.optica.org
A small photochromic grating is selectively and continuously detected from a much larger photorefractive modulation in Fe-doped LiNbO3 crystals in a two-wave mixing experiment …
InP is a key semiconductor for the production of optoelectronic and photonic devices. Its related compounds, such as InGaAsP alloy, have been realized as very important materials …
Y Ding, HJ Eichler - Optics communications, 1994 - Elsevier
Dependence of the phase conjugate signal in photorefractive four-wave mixing on the crystal orientation and the polarization of the interacting beams is experimentally studied for …