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[{"key": "dc.contributor.advisor", "value": "Toppari, Jussi", "language": "", "element": "contributor", "qualifier": "advisor", "schema": "dc"}, {"key": "dc.contributor.advisor", "value": "Groenhof, Gerrit", "language": "", "element": "contributor", "qualifier": "advisor", "schema": "dc"}, {"key": "dc.contributor.author", "value": "Kautto, Mikael", "language": "", "element": "contributor", "qualifier": "author", "schema": "dc"}, {"key": "dc.date.accessioned", "value": "2018-06-29T09:26:54Z", "language": null, "element": "date", "qualifier": "accessioned", "schema": "dc"}, {"key": "dc.date.available", "value": "2018-06-29T09:26:54Z", "language": null, "element": "date", "qualifier": "available", "schema": "dc"}, {"key": "dc.date.issued", "value": "2018", "language": "", "element": "date", "qualifier": "issued", "schema": "dc"}, {"key": "dc.identifier.uri", "value": "https://jyx.jyu.fi/handle/123456789/58797", "language": null, "element": "identifier", "qualifier": "uri", "schema": "dc"}, {"key": "dc.description.abstract", "value": "Materiaalin viritystilat linkittyv\u00e4t erottamattomasti paikallisen optisen ymp\u00e4rist\u00f6n energiatilojen kanssa, kun materiaalin ja sen optisen ymp\u00e4rist\u00f6n energiatilat ovat resonansissa ja kytkeytyminen niiden v\u00e4lill\u00e4 on tarpeeksi vahvaa. T\u00e4llaisen vahvasti kytkeytyneen valon ja materian hybridin uudet energiatilat ovat hyvin erilaiset, kuin pelk\u00e4n valon tai materiaalin energiatilat erikseen. Uusien energiatilojen erotusta kutsutaan Rabi jakautumiseksi. Spektroskopiassa absorptiospektrin Rabi jakautuminen on tunnusomainen piirre vahvalle kytkenn\u00e4lle. T\u00e4ss\u00e4 tutkielmassa havainnollistetaan, miksei v\u00e4riaine-molekyylien ja optisten kaviteettien v\u00e4lisen vahvan kytkenn\u00e4n aiheuttamaa Rabi jakautumista pystyt\u00e4 selitt\u00e4m\u00e4\u00e4n spektrin jakautumisella, joka muodostuu v\u00e4riaineen absorboidessa kaviteettimoodista.\nOptiset Fabry-Perot kaviteetit luotiin h\u00f6yryst\u00e4m\u00e4ll\u00e4 peilin\u00e4 toimivat hopeakerrokset\nvaloresiiniohutkalvon alle ja p\u00e4\u00e4lle. Lasin p\u00e4\u00e4lle luodut kaviteetit ovat satojen nanonetrien paksuisia ja niill\u00e4 on leve\u00e4t resonanssit. S\u00e4\u00e4t\u00e4m\u00e4ll\u00e4 ohutkalvon paksuutta kaviteettimoodin resonanssienergia saatiin vastaamaan v\u00e4riaineen elektronista viritysenergiaa. Lis\u00e4\u00e4m\u00e4ll\u00e4 v\u00e4riainetta peilen v\u00e4liseen ohutkalvoon muodostetaan vahvasti kytkeytynyt j\u00e4rjestelm\u00e4, josta voidaan mitata huoneen l\u00e4mp\u00f6tilassa satojen millielektronivolttien Rabi jakautuminen. Samankaltainen spektrin jakautuminen voidaan luoda transmittanssispektriin asettamalla v\u00e4riainetta sis\u00e4lt\u00e4vi\u00e4 ohutkalvoja tyhj\u00e4n kaviteetin per\u00e4\u00e4n. Lis\u00e4tyt ohutkalvot absorboivat vain kaviteetin l\u00e4p\u00e4issytt\u00e4 valoa muuttamatta heijastusspektri\u00e4.\nOptisia kaviteetteja simuloitiin k\u00e4ytt\u00e4en siirtomatriisimenetelm\u00e4\u00e4. Kaviteettien rakenne optimoitiin siten, ett\u00e4 kaviteetin \u03bb/2-resonanssimoodin energia vastaa Rhodamiini 6G (R6G) v\u00e4riainemolekyylin elektronista virityst\u00e4. Kaviteetin eri kerrosten paksuudet mitattiin atomivoimamikroskoopilla. Vahvasti kytkeytyneet ja uudelleenabsorboivat kaviteettij\u00e4rjestelm\u00e4t karakterisoitiin mittaamalla transmittanssi- ja heijastusspektrit. J\u00e4rjestelmien absorptio laskettiin mitatuista spektreist\u00e4 yht\u00e4l\u00f6ll\u00e4 A = 1 - T - R. Kaviteettien dispersiot selvitettiin tekem\u00e4ll\u00e4 optiset mittaukset eri kulmilla. Ainoastaan vahvasti kytketyn j\u00e4rjestelm\u00e4n absorptiospektreiss\u00e4 huomataan spektrin jakautuminen . Kasvattamalla R6G:n konsentraatiota kaviteetissa 140 millimoolista 275 millimooliin vakuumi Rabi jakautuminen kasvoi kiinte\u00e4n kulman absorptiomittauksessa 150 millielektronivoltista 220 millielektronivolttiin. Tulokset vastaavat teoriaa, jonka mukaan vakuumi Rabi jakautuminen riippuu lineaarisesti molekyylien konsentraation neli\u00f6juuresta.", "language": "fi", "element": "description", "qualifier": "abstract", "schema": "dc"}, {"key": "dc.description.abstract", "value": "When the energy levels of matter and optical environment are on resonance and\nthe coupling between them is strong enough, the excited states of matter become\ninextricably linked with the modes of the local optical environment. The new energy\nlevels of this strongly coupled hybrid light-matter system are very different from\nthose of the matter or the optical system individually. The energy difference of these\nnew states is called Rabi splitting. In spectroscopy the signature of strong coupling\nis the detection of Rabi split in absorption spectrum. This study demonstrates why\nRabi split in absorption spectrum, originating from strong coupling between dye\nmolecules and optical cavity, can not be explained by molecular absorption from\ncavity mode.\nBy evaporating silver layers, acting as mirrors, on above and below of a thin film it\nis possible to fabricate a low quality nanoscale optical cavity. With control of thin\nfilm\u2019s thickness, energy of the cavity mode can be made resonant with the electronic\nexcitation of the dye molecules. Doping the thin film in between the mirrors with\ndye molecules creates a strongly coupled system, in which a Rabi split of hundreds\nof meV can be detected at room temperatures. Similar split can also be detected in\ntransmittance spectra by adding dye doped thin films on top of a bare cavity. These\nfilms absorb part of the light, which is transmitted through cavity, without having\nan effect on reflectance spectra.\nOptical cavities are simulated using the transfer matrix method. The structure of\ncavities are tuned to match the energy of \u03bb/2 resonance mode with the electronic\nexcitation of Rhodamine 6G (R6G) dye. Thicknesses of different layers are measured\nwith atomic force microscope. Strongly coupled and reabsorbing systems are characterized with transmittance and reflectance measurements allowing calculation of\nthe systems\u2019 absorption spectra. Optical measurements are made on different angles\nto find the dispersion of the systems. Calculated absorption spectra show a Rabi\nsplit only in the strongly coupled system. By increasing the concentration of R6G in\ncavity from 140 mM to 275 mM vacuum Rabi splitting is increased from 150 meV to\n220 meV. Result agrees with theory, which states that vacuum Rabi split is linearly\nproportional to the square root of the concentration of the molecules.", "language": "en", "element": "description", "qualifier": "abstract", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Submitted by Riitta Pitk\u00e4nen (rpitkane@jyu.fi) on 2018-06-29T09:26:54Z\nNo. of bitstreams: 0", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Made available in DSpace on 2018-06-29T09:26:54Z (GMT). No. of bitstreams: 0\n Previous issue date: 2018", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.format.extent", "value": "62", "language": "", "element": "format", "qualifier": "extent", "schema": "dc"}, {"key": "dc.format.mimetype", "value": "application/pdf", "language": null, "element": "format", "qualifier": "mimetype", "schema": "dc"}, {"key": "dc.language.iso", "value": "eng", "language": null, "element": "language", "qualifier": "iso", "schema": "dc"}, {"key": "dc.rights", "value": "In Copyright", "language": "en", "element": "rights", "qualifier": null, "schema": "dc"}, {"key": "dc.subject.other", "value": "vahva kytkent\u00e4", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "optiset kaviteetit", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "uudelleenabsorptio", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "Rhodamiini 6G", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.title", "value": "Spectroscopic study of strong coupling between R6G-dye and optical cavities", "language": "", "element": "title", "qualifier": null, "schema": "dc"}, {"key": "dc.type", "value": "master thesis", "language": null, "element": "type", "qualifier": null, "schema": "dc"}, {"key": "dc.identifier.urn", "value": "URN:NBN:fi:jyu-201806293423", "language": "", "element": "identifier", "qualifier": "urn", "schema": "dc"}, {"key": "dc.type.ontasot", "value": "Pro gradu -tutkielma", "language": "fi", "element": "type", "qualifier": "ontasot", "schema": "dc"}, {"key": "dc.type.ontasot", "value": "Master\u2019s thesis", "language": "en", "element": "type", "qualifier": "ontasot", "schema": "dc"}, {"key": "dc.contributor.faculty", "value": "Matemaattis-luonnontieteellinen tiedekunta", "language": "fi", "element": "contributor", "qualifier": "faculty", "schema": "dc"}, {"key": "dc.contributor.faculty", "value": "Faculty of Sciences", "language": "en", "element": "contributor", "qualifier": "faculty", "schema": "dc"}, {"key": "dc.contributor.department", "value": "Fysiikan laitos", "language": "fi", "element": "contributor", "qualifier": "department", "schema": "dc"}, {"key": "dc.contributor.department", "value": "Department of Physics", "language": "en", "element": "contributor", "qualifier": "department", "schema": "dc"}, {"key": "dc.contributor.organization", "value": "Jyv\u00e4skyl\u00e4n yliopisto", "language": "fi", "element": "contributor", "qualifier": "organization", "schema": "dc"}, {"key": "dc.contributor.organization", "value": "University of Jyv\u00e4skyl\u00e4", "language": "en", "element": "contributor", "qualifier": "organization", "schema": "dc"}, {"key": "dc.subject.discipline", "value": "Fysiikka", "language": "fi", "element": "subject", "qualifier": "discipline", "schema": "dc"}, {"key": "dc.subject.discipline", "value": "Physics", "language": "en", "element": "subject", "qualifier": "discipline", "schema": "dc"}, {"key": "yvv.contractresearch.funding", "value": "0", "language": "", "element": "contractresearch", "qualifier": "funding", "schema": "yvv"}, {"key": "dc.type.coar", "value": "http://purl.org/coar/resource_type/c_bdcc", "language": null, "element": "type", "qualifier": "coar", "schema": "dc"}, {"key": "dc.rights.accesslevel", "value": "openAccess", "language": null, "element": "rights", "qualifier": "accesslevel", "schema": "dc"}, {"key": "dc.type.publication", "value": "masterThesis", "language": null, "element": "type", "qualifier": "publication", "schema": "dc"}, {"key": "dc.subject.oppiainekoodi", "value": "4021", "language": "", "element": "subject", "qualifier": "oppiainekoodi", "schema": "dc"}, {"key": "dc.format.content", "value": "fulltext", "language": null, "element": "format", "qualifier": "content", "schema": "dc"}, {"key": "dc.rights.url", "value": "https://rightsstatements.org/page/InC/1.0/", "language": null, "element": "rights", "qualifier": "url", "schema": "dc"}, {"key": "dc.type.okm", "value": "G2", "language": null, "element": "type", "qualifier": "okm", "schema": "dc"}]
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