Sökning: "Optical resonances"

Visar resultat 1 - 5 av 7 uppsatser innehållade orden Optical resonances.

  1. 1. Fano Resonances in Time-Dependent Wells

    L3-uppsats, Uppsala universitet/Materialteori

    Författare :Anton Gregefalk; [2023]
    Nyckelord :Fano resonance; Floquet scattering; Pumped shot-noise; Linear band tilt; Quadratic band touching; Time periodic Hamiltonian;

    Sammanfattning : Floquet’s theorem, a temporal analogue of Bloch’s theorem, is used for studying a time-dependent potential. With applications in cold atoms on optical lattices, quantum dots and more, there is a growing interest in Floquet engineering exotic materials and phases. LÄS MER

  3. 2. Electro-Optical Characterization of Passivated InAsP/InP Quantum Discs-in-Nanowire Heterostructures

    Magister-uppsats, Lunds universitet/Fasta tillståndets fysik; Lunds universitet/Fysiska institutionen

    Författare :Samareh Kordi Jazi; [2018]
    Nyckelord :Physics and Astronomy;

    Sammanfattning : Semiconductor nanowires, with their quasi one-dimension geometry, inherently provide strain relaxation for heterogeneous integration and also strong light mode confinement. Nanowire-based photonic devices have also been demonstrated to offer significantly enhanced quantum efficiency, gain and reduced noise. LÄS MER

  4. 3. Towards a tunable nanometer thick flat lens

    Magister-uppsats, Uppsala universitet/Materialfysik

    Författare :Hugo Laurell; Johan Hillborg; [2018]
    Nyckelord :Metamaterial; COMSOL; Fano resonances; Surface plasmon polariton; Localized surface plasmons; Nanophotonics;

    Sammanfattning : This report examines the cross sections of silver microresonators subjected to an incident light with different polarization. The microresonators had different geometries with and without broken symmetries. LÄS MER

  5. 4. Absorption of light through isolated and coupled resonances in horizontal InP nanowire arrays

    Master-uppsats, Lunds universitet/Fasta tillståndets fysik; Lunds universitet/Fysiska institutionen

    Författare :Ali Hosseinnia; [2015]
    Nyckelord :Coupling; Optical resonances; Horizontal nanowires; Periodic Array; Indium Phosphide; Finite Element Method; Scattering Matrix Method; Eigen function method; Mie Theory; Scattering; Absorption; Nano-Optics; Nanowire; Physics and Astronomy;

    Sammanfattning : We have studied the interaction of light with two types of closely related nanostructures: a single horizontal InP nanowire and an infinite periodic array of such nanowires. The study has been done theoretically by calculating the absorption cross section of the nanowires via a semi analytical method, the Mie theory, and two numerical methods, the scattering matrix method (SMM) and the finite element method (FEM) to perform electromagnetic modeling. LÄS MER

  7. 5. Plasmonic resonances in metallic nanoarrays

    L3-uppsats, Uppsala universitet/Materialfysik

    Författare :Jana Huber; [2015]
    Nyckelord :Plasmon; magnetism; optics; magneto-plasmonics;

    Sammanfattning : The optical and magneto-optical response of plasmonic resonances in metallic nanoarrays out of square structures, either in holes or islands, were investigated. The excitation of the Bragg Plasmons takes place within a grating. LÄS MER