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Optica Publishing Group
  • Quantum Electronics and Laser Science Conference
  • OSA Technical Digest (Optica Publishing Group, 1996),
  • paper QThH4

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

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Abstract

Recently, photorefractive (PR) spatial optical solitons have been the focus of considerable attention.1-6 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.2,3 These soliton states are known to occur when the drift term dominates in the expression of the space charge field. In a recent study,7 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 experiments8 suggest that this self-deflection can exceed that predicted by theory,7 especially in the regime of quite high bias fields.

© 1996 Optical Society of America

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