Show simple item record

dc.contributor.advisorAydınlı, Atilla
dc.contributor.authorKarademir, Ertuğrul
dc.date.accessioned2016-05-04T13:39:10Z
dc.date.available2016-05-04T13:39:10Z
dc.date.copyright2015-01
dc.date.issued2015-01
dc.date.submitted2015-01-27
dc.identifier.urihttp://hdl.handle.net/11693/29065
dc.descriptionCataloged from PDF version of thesis.en_US
dc.descriptionIncludes bibliographical references (leaves 106-120).en_US
dc.descriptionThesis (Ph. D.): Bilkent University, Department of Physics, İhsan Doğramacı Bilkent University, 2015.en_US
dc.description.abstractSurface plasmon polaritons (SPPs) are quanta of electromagnetic excitations at the interface between metal and dielectric media. SPPs with an evanescent tail in the perpendicular direction, thus their properties are sensitive to variations in the optical properties of the dielectrics film. If SPPs are created near excitonic media, coupling between excitons and SPs can be achieved. In this thesis, interaction dynamics of SPP-exciton coupling is investigated. In weak coupling case, properties of SPPs and excitons are perturbed as the enhancement of the optical absorption in excitonic matrices. In the strong coupling, coupled pairs (plexcitons) causes Rabi splitting in SPP dispersion curves. By patterning the metal-dielectric interface with sine profile grating, it is possible to form a band gap on the dispersion curve, width of which can be tuned by the groove depth and SPP-Exciton coupling can be engineered. Using this, a new type of crystal, plexcitonic crystal, is proposed and demonstrated that exhibit directional dependent coupling on square and triangular lattices. Superposing an additional grating on the initial one but with a slight difference in pitch, results in Moir e cavities, in which, slow plasmon modes can be confined. We show that we can directly image these modes using dark field microscopy. Further, the slow cavity mode in contact with an excitonic source, where SPPs are coupled with near field coupling, results in ampliffed light signal. Various Moire cavities are shown to exhibit plasmonic lasing when slow plasmon modes in Ag coated cavities are excited inside a suitable gain medium.en_US
dc.description.statementofresponsibilityby Ertuğrul Karademir.en_US
dc.format.extentxvi, 120 leaves : charts.en_US
dc.language.isoEnglishen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectSurface plasmon polaritonsen_US
dc.subjectExcitonsen_US
dc.subjectLight matter interactionen_US
dc.subjectPlexcitonic crystalsen_US
dc.subjectMoire cavitiesen_US
dc.subjectPlasmonic lasersen_US
dc.titleLight matter interaction in plexcitonic crystals and moiré cavitiesen_US
dc.title.alternativePlekssitonik kristaller ve moiré kovuklarında ışık madde etkileşimien_US
dc.typeThesisen_US
dc.departmentDepartment of Physicsen_US
dc.publisherBilkent Universityen_US
dc.description.degreePh.D.en_US
dc.identifier.itemidB149500
dc.embargo.release2017-01-27


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record