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Higher-order space charge field effects on the evolution of spatial solitons in biased photorefractive crystals

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3 Author(s)
S. R. Singh ; Dept. of Electr. Eng., Lehigh Univ., Bethlehem, PA, USA ; M. I. Carvalho ; D. N. Christodoulides

Summary form only given. Recently, photorefractive (PR) spatial optical solitons have been the focus of considerable attention. Of particular interest are the so-called screening solitons that occur in steady state when an external bias voltage is appropriately applied to a PR crystal. These soliton states are known to occur when the drift term dominates in the expression of the space charge field. In a recent study, the effects arising from first-order diffusion terms have also been investigated. It was found that the PR soliton can experience adiabatically self-deflection that varies linearly with the applied electric field. However, recent experiments suggest that this self-deflection can exceed that predicted by theory, especially in the regime of quite high bias fields. To account for this discrepancy, we investigate the effects of other higher-order electric field terms on the evolution of bright steady-state solitons in PR media.

Published in:

Quantum Electronics and Laser Science Conference, 1996. QELS '96., Summaries of Papers Presented at the

Date of Conference:

7-7 June 1996