Localized modes in chi((2)) media with PT-symmetric localized potential

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dc.contributor.authorMoreira, F. C.
dc.contributor.authorAbdullaev, F. Kh. [UNESP]
dc.contributor.authorKonotop, V. V.
dc.contributor.authorYulin, A. V.
dc.contributor.institutionUniversidade Federal de Alagoas (UFAL)
dc.contributor.institutionUniv Lisbon
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2013-09-30T19:02:52Z
dc.date.accessioned2014-05-20T14:14:00Z
dc.date.available2013-09-30T19:02:52Z
dc.date.available2014-05-20T14:14:00Z
dc.date.issued2012-11-15
dc.description.abstractWe study the existence and stability of solitons in the quadratic nonlinear media with spatially localized parity-time- (PT)-symmetric modulation of the linear refractive index. Families of stable one- and two-hump solitons are found. The properties of nonlinear modes bifurcating from a linear limit of small fundamental harmonic fields are investigated. It is shown that the fundamental branch, bifurcating from the linear mode of the fundamental harmonic is limited in power. The power maximum decreases with the strength of the imaginary part of the refractive index. The modes bifurcating from the linear mode of the second harmonic can exist even above the PT-symmetry-breaking threshold. We found that the fundamental branch bifurcating from the linear limit can undergo a secondary bifurcation colliding with a branch of two-hump soliton solutions. The stability intervals for different values of the propagation constant and gain or loss gradient are obtained. The examples of dynamics and excitations of solitons obtained by numerical simulations are also given.en
dc.description.affiliationUniv Fed Alagoas, BR-57072900 Maceio Alagoas, Brazil
dc.description.affiliationUniv Lisbon, Fac Ciencias, Ctr Fis Teor & Computac, Dept Fis, P-1649003 Lisbon, Portugal
dc.description.affiliationUniv Estadual Paulista, Inst Fis Teor, BR-01140070 São Paulo, Brazil
dc.description.affiliationUnespUniv Estadual Paulista, Inst Fis Teor, BR-01140070 São Paulo, Brazil
dc.description.sponsorshipEU Alban program
dc.description.sponsorshipFundação para a Ciência e a Tecnologia (FCT)
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipIdFCT: PTDC/FIS/112624/2009
dc.description.sponsorshipIdFCT: PEst-OE/FIS/UI0618/2011
dc.format.extent7
dc.identifierhttp://dx.doi.org/10.1103/PhysRevA.86.053815
dc.identifier.citationPhysical Review A. College Pk: Amer Physical Soc, v. 86, n. 5, p. 7, 2012.
dc.identifier.doi10.1103/PhysRevA.86.053815
dc.identifier.fileWOS000311138200007.pdf
dc.identifier.issn1050-2947
dc.identifier.urihttp://hdl.handle.net/11449/24668
dc.identifier.wosWOS:000311138200007
dc.language.isoeng
dc.publisherAmer Physical Soc
dc.relation.ispartofPhysical Review A
dc.relation.ispartofsjr1,288
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.titleLocalized modes in chi((2)) media with PT-symmetric localized potentialen
dc.typeArtigo
dcterms.licensehttp://publish.aps.org/authors/transfer-of-copyright-agreement
dcterms.rightsHolderAmer Physical Soc
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Física Teórica (IFT), São Paulopt

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