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 …

Space-charge field in photorefractive materials at large modulation clickable element to
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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 …

We show analytically and numerically that the refractive-index gratings produced by the
photorefractive effect need not be of the same periodicity as the driving light intensity. Even …

Analytic expressions are derived for second-and third-order space-charge fields for a
moving intensity pattern and arbitrary field strengths. The dependence on the spatial …

The spatial subharmonic instability arising from the material equations is investigated
theoretically for both square and sinusoidal applied alternating electric fields. The threshold …

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 …

The fundamental component of the space-charge field in a photorefractive crystal is studied
in the presence of an applied alternating electric field. A general equation for the amplitude …

In this chapter, the standard model accounting for the photorefractive nonlinearity in a
material is presented. The mathematical formalism of the rate equations has been …

Interactions between optical beams incident upon and generated within a photorefractive
material are investigated by numerically solving a set of nonlinear coupled differential …