Feedback-controlled running holograms in strongly absorbing photorefractive materials

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dc.contributor.authorFrejlich, J.
dc.contributor.authorFreschi, A. A. [UNESP]
dc.contributor.authorGarcia, P. M.
dc.contributor.authorShamonina, E.
dc.contributor.authorGayvoronsky, V. Ya
dc.contributor.authorRinghofer, K. H.
dc.contributor.institutionUniversidade Estadual de Campinas (UNICAMP)
dc.contributor.institutionUniversity of Osnabrück
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionAcad. da Força Aérea
dc.contributor.institutionNational Academy of Sciences
dc.date.accessioned2014-05-27T11:19:56Z
dc.date.available2014-05-27T11:19:56Z
dc.date.issued2000-09-01
dc.description.abstractWe propose a mathematical model for the movement in absorbing materials of photorefractive holograms under feedback constraints. We use this model to analyze the speed of a fringe-locked running hologram in photorefractive sillenite crystals that usually exhibit a strong absorption effect. Fringe-locked experiments permit us to compute the quantum efficiency for the photogeneration of charge carriers in photorefractive crystals if the effect of bulk absorption and the effective value of the externally applied field are adequately taken into consideration. A Bi12TiO20 sample was measured with the 532-nm laser wavelength, and a quantum efficiency of φ = 0.37 was obtained. Disregarding absorption leads to large errors in φ. © 2000 Optical Society of America.en
dc.description.affiliationLaboratório de Óptica Instituto de Física Universidade Estadual de Campinas, Caixa Postal 6165, 13083-970 Campinas-SP
dc.description.affiliationDepartment of Physics University of Osnabrück, D-49069 Osnabrück
dc.description.affiliationDepartamento de Física Universidade Estadual Paulista, Rio Claro-SP
dc.description.affiliationAcad. da Força Aérea, Pirassununga-SP
dc.description.affiliationInstitute of Physics National Academy of Sciences, 252650 Kiev
dc.description.affiliationUnespDepartamento de Física Universidade Estadual Paulista, Rio Claro-SP
dc.format.extent1517-1521
dc.identifierhttp://dx.doi.org/10.1364/JOSAB.17.001517
dc.identifier.citationJournal of the Optical Society of America B: Optical Physics, v. 17, n. 9, p. 1517-1521, 2000.
dc.identifier.doi10.1364/JOSAB.17.001517
dc.identifier.file2-s2.0-0034402206.pdf
dc.identifier.issn0740-3224
dc.identifier.scopus2-s2.0-0034402206
dc.identifier.urihttp://hdl.handle.net/11449/66236
dc.language.isoeng
dc.relation.ispartofJournal of the Optical Society of America B: Optical Physics
dc.relation.ispartofjcr2.048
dc.relation.ispartofsjr0,859
dc.rights.accessRightsAcesso restrito
dc.sourceScopus
dc.subjectFeedback control
dc.subjectLight absorption
dc.subjectPhotorefractive materials
dc.subjectQuantum efficiency
dc.subjectPhotogeneration
dc.subjectHolograms
dc.titleFeedback-controlled running holograms in strongly absorbing photorefractive materialsen
dc.typeArtigo
dcterms.licensehttp://www.opticsinfobase.org/submit/review/copyright_permissions.cfm#posting
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Geociências e Ciências Exatas, Rio Claropt

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