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Titolo:
AMPLITUDE-EQUATION FORMALISM FOR 4-WAVE-MIXING GEOMETRY WITH TRANSMISSION GRATINGS
Autore:
ENGIN D; CROSS MC; YARIV A;
Indirizzi:
CALTECH,DEPT APPL PHYS PASADENA CA 91125 CALTECH,DEPT APPL PHYS PASADENA CA 91125
Titolo Testata:
Journal of the Optical Society of America. B, Optical physics
fascicolo: 12, volume: 14, anno: 1997,
pagine: 3349 - 3362
SICI:
0740-3224(1997)14:12<3349:AFF4GW>2.0.ZU;2-E
Fonte:
ISI
Lingua:
ENG
Soggetto:
PHASE-CONJUGATE MIRROR; TEMPORAL EVOLUTION; OSCILLATOR; CONVECTION;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
30
Recensione:
Indirizzi per estratti:
Citazione:
D. Engin et al., "AMPLITUDE-EQUATION FORMALISM FOR 4-WAVE-MIXING GEOMETRY WITH TRANSMISSION GRATINGS", Journal of the Optical Society of America. B, Optical physics, 14(12), 1997, pp. 3349-3362

Abstract

An amplitude equation is derived for a four-wave-mixing geometry withnearly counterpropagating, mutually incoherent, nondiffracting pump beams, spatially overlapping in a photorefractive material with a nonlocal response. This equation extends the earlier linear two-dimensionaltheory to the weakly nonlinear regime. The analysis also starts from a more complete equation for the photorefractive effect, which leads to the prediction of novel effects especially apparent in the nonlinearregime. Precise predictions for the spatiotemporal behavior of the grating amplitude in the nonlinear regime are presented. The range of validity of the amplitude equation is studied. The characteristics of the instability in the nonlinear regime are analyzed through a front-selection analysis. (C) 1997 Optical Society of America [S0740-3224(97)01812-2].

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Documento generato il 07/08/20 alle ore 21:17:03