The time-dependent, nonlinear Kukhtarev equations are numerically solved to determine the temporal and spatial dependence of the space-charge field for a sinusoidal intensity profile …
A simple theory based on Kukhtarev's materials equations and linear stability analysis is developed providing the threshold conditions for the spontaneous emergence of spatial …
Z Sheng, Y Cui, N Cheng, Y Wei - JOSA B, 1996 - opg.optica.org
The band transport model is used to derive the space-charge field induced by an optical beam propagating in photorefractive materials with the application of an external dc field in …
B Crosignani, P Di Porto, A Degasperis, M Segev… - JOSA B, 1997 - opg.optica.org
The model equations for beam propagation in photorefractive material are simplified under appropriate conditions. The possibility of obtaining bright and dark screening soliton …
The nonlinear differential equations describing the response of photorefractive material to a moving sinusoidal intensity pattern that permits large modulation depth are solved by a …
BA Usievich, DK Nurligareev, VA Sychugov… - Quantum …, 2010 - iopscience.iop.org
Excitation of nonlinear surface waves is studied at the SBN-75 crystal—air interface. The SBN-75 crystal is characterised by the diffusion-type photorefractive nonlinearity, the surface …
We report a direct observation of space charge waves in photorefractive crystals with point group 23 (sillenites) based on their penetration into an area with uniform light illumination. It …
F Vachss, L Hesselink - JOSA A, 1988 - opg.optica.org
The response of photorefractive materials to sinusoidal intensity patterns of high modulation depths is considered. It is shown that the induced refractive-index response in this regime is …