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Optics Letters

Optics Letters


  • Vol. 24, Iss. 16 — Aug. 15, 1999
  • pp: 1163–1165

Critical slowing down of space-charge field relaxation in photorefractive sillenites

B. I. Sturman, E. V. Podivilov, H. C. Pedersen, and P. M. Johansen  »View Author Affiliations

Optics Letters, Vol. 24, Issue 16, pp. 1163-1165 (1999)

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We propose a theoretical model for the recently reported anomalously long decay of a space-charge field that was resonantly excited in a photorefractive sillenite crystal [Phys. Rev. Lett. 79, 67 (1997)]. The model is based on the conventional concept of charge transfer and does not require excessively large values of the quality factor for space-charge waves. The effect in question is qualified as a critical slowing of the relaxation process as the threshold of optical oscillation is approached.

© 1999 Optical Society of America

OCIS Codes
(090.7330) Holography : Volume gratings
(160.5320) Materials : Photorefractive materials
(190.4410) Nonlinear optics : Nonlinear optics, parametric processes
(190.5330) Nonlinear optics : Photorefractive optics

B. I. Sturman, E. V. Podivilov, H. C. Pedersen, and P. M. Johansen, "Critical slowing down of space-charge field relaxation in photorefractive sillenites," Opt. Lett. 24, 1163-1165 (1999)

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