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Optics Letters

Optics Letters

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  • Vol. 22, Iss. 19 — Oct. 1, 1997
  • pp: 1470–1472

Self-focusing in photorefractive two-wave mixing

M. Vaupel, C. Seror, and R. Dykstra  »View Author Affiliations


Optics Letters, Vol. 22, Issue 19, pp. 1470-1472 (1997)
http://dx.doi.org/10.1364/OL.22.001470


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Abstract

Self-focusing and self-defocusing of light in two-wave mixing are investigated experimentally. Amplification and self-focusing are measured as functions of the frequency shift between signal and pump beams. A frequency dependence is found in Kramers–Kronig form, as is plausible by the analogy of photorefractive amplification and laser amplification. Reversal of the external dc field on the material or a change in the frequency shift between the signal and pump beams is found to change self-focusing to self-defocusing.

© 1997 Optical Society of America

OCIS Codes
(190.5330) Nonlinear optics : Photorefractive optics
(190.7070) Nonlinear optics : Two-wave mixing
(260.5950) Physical optics : Self-focusing

Citation
M. Vaupel, C. Seror, and R. Dykstra, "Self-focusing in photorefractive two-wave mixing," Opt. Lett. 22, 1470-1472 (1997)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-22-19-1470

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