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Dirk R. Englund. Peng, Cheng, S.M. Massachusetts Institute of Technology Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science. Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science 2016-03-03T21:10:32Z 2016-03-03T21:10:32Z 2015 2015 http://hdl.handle.net/1721.1/101585 940974471 Thesis: S.M., Massachusetts Institute of Technology, Department of Electrical Engineering and Computer Science, 2015. Cataloged from PDF version of thesis. Includes bibliographical references (pages 59-64). Graphene plasmons have recently been proposed as an alternative to noble-metal plasmons in the field of photonics, due to its extremely tight light confinement, relatively long-lived collective oscillation, and high tunability via electrostatic gating. Successful support and tuning of graphene plasmonic modes rely on controllable doping of graphene to high carrier densities in nanometer-scale structures. In this thesis, an experimental approach to generating nanoscale spatial carrier density modulation of graphene using electrolyte gates and crosslinked-PMMA screen is proposed and investigated. The increased optical absorption in the infrared region due to plasmon resonances induced by the proposed scheme is numerically studied. We then present the fabrication technique of the proposed scheme for various nanostructure geometries. Finally, we provide an outlook of future studies of graphene plasmonics, including plasmon excitation with solid-state cavity quantum electrodynamics (QED). by Cheng Peng. S.M. 64 pages eng Massachusetts Institute of Technology M.I.T. theses are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission. See provided URL for inquiries about permission. http://dspace.mit.edu/handle/1721.1/7582 Electrical Engineering and Computer Science. Towards infrared plasmonics in graphene Thesis application/pdf false Publication unknown unknown <Publication xmlns="https://www.openaire.eu/cerif-profile/1.1/" id="58de47d8-155e-457e-8975-3db7667975ef"> <Type xmlns="https://www.openaire.eu/cerif-profile/vocab/COAR_Publication_Types">http://purl.org/coar/resource_type/c_1843</Type> <Language>eng</Language> <Title>Towards infrared plasmonics in graphene</Title> <PublishedIn> <Publication> </Publication> </PublishedIn> <PublicationDate>2015</PublicationDate> <Authors> <Author> <DisplayName>Peng, Cheng, S.M. Massachusetts Institute of Technology</DisplayName> <Affiliation> <OrgUnit> </OrgUnit> </Affiliation> </Author> </Authors> <Editors> </Editors> <Publishers> <Publisher> <DisplayName>Massachusetts Institute of Technology</DisplayName> <OrgUnit /> </Publisher> </Publishers> <License>http://dspace.mit.edu/handle/1721.1/7582</License> <Keyword>Electrical Engineering and Computer Science.</Keyword> <Abstract>Graphene plasmons have recently been proposed as an alternative to noble-metal plasmons in the field of photonics, due to its extremely tight light confinement, relatively long-lived collective oscillation, and high tunability via electrostatic gating. Successful support and tuning of graphene plasmonic modes rely on controllable doping of graphene to high carrier densities in nanometer-scale structures. In this thesis, an experimental approach to generating nanoscale spatial carrier density modulation of graphene using electrolyte gates and crosslinked-PMMA screen is proposed and investigated. The increased optical absorption in the infrared region due to plasmon resonances induced by the proposed scheme is numerically studied. We then present the fabrication technique of the proposed scheme for various nanostructure geometries. Finally, we provide an outlook of future studies of graphene plasmonics, including plasmon excitation with solid-state cavity quantum electrodynamics (QED).</Abstract> <Access xmlns="http://purl.org/coar/access_right" > </Access> </Publication>