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dc.contributor.advisor Nordlander, Peter J.
dc.creatorSobhani Khakestar, Heidar
dc.date.accessioned 2011-07-25T02:05:24Z
dc.date.available 2011-07-25T02:05:24Z
dc.date.issued 2010
dc.identifier.urihttp://hdl.handle.net/1911/62023
dc.description.abstract Subradiant and superradiant plasmon modes in ring/disk nanocavities and dialers are investigated theoretically and experimentally. The subradiance is obtained through an overall reduction of the total dipole moment of the hybridized mode due to antisymmetric coupling of the dipole moments of the parent plasmons. We observe the appearance of Fano resonances in the optical response of plasmonic nanocavities due to the coherent coupling between their superradiant and subradiant plasmon modes due to structural symmetry breaking. Both subradiant modes and Fano resonances exhibit substantial reductions in linewidth compared to the parent plasmon resonances, opening up possibilities in optical and near IR sensing via plasmon lineshape design. Four reduced-symmetry nanostructures Studied via Plasmon Hybridization and FDTD (Finite Difference Time Domain), a dolmen-style slab arrangement, a ring/disk dimer, a ring/disk cavity and a colloid dimer, clearly exhibit the strong polarization and geometry dependence expected for this behavior at the individual nanostructure level, confirmed by experimental result in each case, multiple Fano resonances occur as structure size is increased.
dc.format.mimetype application/pdf
dc.language.iso eng
dc.subjectOptics
Theoretical physics
Physics
Radiation
dc.title Subradiant, superradiant and Fano resonances in dimer and ring/disk nanocavities
dc.type.genre Thesis
dc.type.material Text
thesis.degree.department Physics
thesis.degree.discipline Natural Sciences
thesis.degree.grantor Rice University
thesis.degree.level Masters
thesis.degree.name Master of Science
dc.identifier.citation Sobhani Khakestar, Heidar. "Subradiant, superradiant and Fano resonances in dimer and ring/disk nanocavities." (2010) Master’s Thesis, Rice University. http://hdl.handle.net/1911/62023.


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