Pairing space-charge field conditions with self-guiding for the attainment of circular symmetry in photorefractive solitons

DelRe, E.; De Masi, G.; Ciattoni, A.; Palange, E.
December 2004
Applied Physics Letters;12/6/2004, Vol. 85 Issue 23, p5499
Academic Journal
By means of a comparative study, we identify a specific physical mechanism that leads to circular-symmetric two-dimensional photorefractive solitons, and determine the conditions for their observation. For a given photorefractive crystal, this allows the control of the transition from an elliptical soliton-supporting regime to a round soliton-supporting one. This indicates a basic recipe to generate electro-optic devices in three-dimensional crystals compatible with single-mode fiber.


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