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Investigation of internal electric fields in graphene/6H-SiC under illumination by the Pockels effect

dc.contributor.authorDědič, Václav
dc.contributor.authorSanitrák, Jakub
dc.contributor.authorFridrišek, Tomáš
dc.contributor.authorRejhon, Martin
dc.contributor.authorMorzhuk, Bohdan
dc.contributor.authorShestopalov, Mykhailo
dc.contributor.authorKunc, Jan
dc.date.accessioned2025-02-18T10:11:02Z
dc.date.available2025-02-18T10:11:02Z
dc.date.issued2023
dc.identifier.urihttps://hdl.handle.net/20.500.14178/2900
dc.description.abstractIn this paper, we introduce a method for mapping profiles of internal electric fields in birefringent crystals based on the electro-optic Pockels effect and measuring phase differences of low-intensity polarized light. In the case of the studied 6H-SiC crystal with graphene electrodes, the experiment is significantly affected by birefringence at zero bias voltage applied to the crystal and a strong thermo-optical effect. We dealt with these phenomena by adding a Soleil-Babinet compensator and using considerations based on measurements of crystal heating under laser illumination. The method can be generalized and adapted to any Pockels crystal that can withstand sufficiently high voltages. We demonstrate the significant formation of space charge in semi-insulating 6H-SiC under illumination by above-bandgap light.en
dc.language.isoen
dc.relation.urlhttps://doi.org/10.1364/OE.502197
dc.rightsOptica Open Access Publishing Agreement
dc.titleInvestigation of internal electric fields in graphene/6H-SiC under illumination by the Pockels effecten
dcterms.accessRightsopenAccess
dcterms.licensehttps://opg.optica.org/submit/review/pdf/CopyrightTransferOpenAccessAgreement-2021-09-20.pdf
dc.date.updated2025-02-18T10:11:02Z
dc.subject.keywordelectric fieldsen
dc.subject.keywordgrapheneen
dc.subject.keywordilluminationen
dc.subject.keywordPockels effecten
dc.identifier.eissn1094-4087
dc.relation.fundingReferenceinfo:eu-repo/grantAgreement/GA0/GA/GA22-20020S
dc.relation.fundingReferenceinfo:eu-repo/grantAgreement/UK/COOP/COOP
dc.date.embargoStartDate2025-02-18
dc.type.obd73
dc.type.versioninfo:eu-repo/semantics/publishedVersion
dc.identifier.doi10.1364/OE.502197
dc.identifier.utWos001408451000001
dc.identifier.eidScopus2-s2.0-85174798954
dc.identifier.obd640959
dc.identifier.pubmed37859176
dc.subject.rivPrimary10000::10300::10302
dcterms.isPartOf.nameOptics Express
dcterms.isPartOf.issn1094-4087
dcterms.isPartOf.journalYear2023
dcterms.isPartOf.journalVolume31
dcterms.isPartOf.journalIssue21
uk.faculty.primaryId116
uk.faculty.primaryNameMatematicko-fyzikální fakultacs
uk.faculty.primaryNameFaculty of Mathematics and Physicsen
uk.department.primaryId1191
uk.department.primaryNameFyzikální ústav UKcs
uk.department.primaryNameInstitute of Physics of Charles Universityen
dc.description.pageRange34123-34142
dc.type.obdHierarchyCsČLÁNEK V ČASOPISU::článek v časopisu::původní článekcs
dc.type.obdHierarchyEnJOURNAL ARTICLE::journal article::original articleen
dc.type.obdHierarchyCode73::152::206en
uk.displayTitleInvestigation of internal electric fields in graphene/6H-SiC under illumination by the Pockels effecten


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