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Self-bending of photorefractive solitons |
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| Authors: | J. Petter C. Weilnau C. Denz A. Stepken F. Kaiser |
| Affiliation: | a Light- and Particle Optics, Institute of Applied Physics, Darmstadt University of Technology, Hochschulstr. 6, D-64289 Darmstadt, Germany b Theoretical Nonlinear Dynamics, Institute of Applied Physics, Darmstadt University of Technology, Hochschulstr. 4, D-64289 Darmstadt, Germany |
| Abstract: | Self-bending of photorefractive solitons is caused by diffusion in photorefractive crystals and becomes an important effect when the beam size is in the range of the charge carriers diffusion length. In this paper we present an experimental and numerical examination of the beam bending dependence on relevant parameters such as the applied electric field and the beam intensity. We demonstrate that the bending dependence on the electric field in the low saturation regime has the form of a square function at low values of the field and becomes linear for higher values. For stronger saturation the curve gets the form of a square root function. The bending dependence on the beam intensity has a maximum at defined intensity. The experimental data are compared with numerical simulations, giving a good qualitative agreement. |
| Keywords: | Soliton Bending Photorefractive |
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