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dc.contributorMartorell Pena, Jordi
dc.contributor.authorYao, Can
dc.date.accessioned2009-12-01T10:58:14Z
dc.date.available2009-12-01T10:58:14Z
dc.date.issued2009-09-09
dc.identifier.urihttp://hdl.handle.net/2099.1/7958
dc.descriptionTesina realitzada en col.laboració amb l'Institut de Ciències Fotòniques
dc.description.abstractThe random anti-parallel micro-ferroelectric domains in SBN (Strontium-Barium Niobate, Sr0.61Ba0.39Nb2O3, ) crystal can be used for efficient nonlinear optical processes at different frequencies. The ferroelectric domains in SBN crystal are easily influenced by temperature and electric field. By comparing different second harmonic generation (SHG) profiles and efficiencies of SBN crystal under electric field poling and thermal treatments at different temperatures, and observing the ferroelectric domain structures (sizes and directions) under the scanning electronic microscope (SEM), the mechanism of how the thermal treatment and poling affects the SBN crystal’s inner structure, thus the frequency doubling process, is revealed. We found that for the poled SBN crystal, the SHG emission shows a speckle pattern; on the other hand, after a thermal treatment there is a clear maximum in the propagation direction of the fundamental light.
dc.language.isoeng
dc.publisherUniversitat Politècnica de Catalunya
dc.rightsAttribution-NonCommercial-NoDerivs 3.0 Spain
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/es/
dc.subjectÀrees temàtiques de la UPC::Enginyeria de la telecomunicació::Telecomunicació òptica::Fotònica
dc.subject.lcshFerroelectric crystals
dc.subject.othersecond harmonic generation
dc.subject.otherSpeckle
dc.subject.otherThermal treatment
dc.subject.otherFerroelectric domains
dc.subject.otherSBN crystal
dc.titleFrequency doubling in SBN crystal affected by poling and thermal treatment
dc.typeMaster thesis
dc.subject.lemacCristalls ferroelectrics
dc.rights.accessOpen Access
dc.audience.educationlevelMàster
dc.audience.mediatorEscola Tècnica Superior d'Enginyeria Industrial de Barcelona


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