Simulation of spatiotemporal evolution of light scattering into hexagonal and ring patterns in photorefractive materials

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Journal of the Optical Society of America B: Optical Physics, ISSN: 0740-3224, Vol: 20, Issue: 3, Page: 568-576

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Zhang, Jia; Banerjee, Partha P.
The Optical Society; Optical Society of America; eCommons
Physics and Astronomy; Computer Engineering; Electrical and Computer Engineering; Electrical and Electronics; Electromagnetics and Photonics; Optics; Other Electrical and Computer Engineering; Systems and Communications
article description
We have constructed a spatiotemporal nonlinear system model based on induced reflection gratings to study the energy exchange that results in pattern formation inside a photorefractive crystal. Along with a phenomenological model to illustrate the buildup of the reflection gratings caused by counterpropagating waves inside the photorefractive material, we have used a wave equation to simulate the spatiotemporal evolution of scattered light into hexagonal and ring patterns in a photorefractive material. Conditions conducive to hexagonal and ring formations are found, and the stability of the eigenmodes are investigated. © 2003 Optical Society of America.