Optoacoustic solitons in Bragg gratings

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dc.creatorTasgal, Richard S.
dc.creatorBand, Y. B.
dc.creatorMalomed, Boris A.
dc.date2007-05-14
dc.date2007-06-20
dc.date.accessioned2026-07-07T08:10:57Z
dc.date.available2026-07-07T08:10:57Z
dc.descriptionOptical gap solitons, which exist due to a balance of nonlinearity and dispersion due to a Bragg grating, can couple to acoustic waves through electrostriction. This gives rise to a new species of ``gap-acoustic'' solitons (GASs), for which we find exact analytic solutions. The GAS consists of an optical pulse similar to the optical gap soliton, dressed by an accompanying phonon pulse. Close to the speed of sound, the phonon component is large. In subsonic (supersonic) solitons, the phonon pulse is a positive (negative) density variation. Coupling to the acoustic field damps the solitons' oscillatory instability, and gives rise to a distinct instability for supersonic solitons, which may make the GAS decelerate and change direction, ultimately making the soliton subsonic.
dc.description5 pages, 3 figures
dc.identifierhttps://arxiv.org/abs/0705.1892
dc.identifierhttp://arxiv.org/abs/0705.1892
dc.identifierPhysical Review Letters 98, 243902 (2007)
dc.identifierdoi:10.1103/PhysRevLett.98.243902
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/131974
dc.subjectPattern Formation and Solitons
dc.subjectOptics
dc.titleOptoacoustic solitons in Bragg gratings
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