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Title: Theoretical study of enhancement of spontaneous emission by hyperbolic metamaterials nanoparticles
Authors: Kossowski, Nicolas Jean Michel
Keywords: Engineering::Electrical and electronic engineering
Issue Date: 2022
Publisher: Nanyang Technological University
Source: Kossowski, N. J. M. (2022). Theoretical study of enhancement of spontaneous emission by hyperbolic metamaterials nanoparticles. Doctoral thesis, Nanyang Technological University, Singapore.
Abstract: Spontaneous emission, the process by which an emitter in an excited state transitions spontaneously to the ground state by emitting a photon, is at the center of several applications from spectroscopy to efficient light sources. The decay rate is highly dependent of the environment and through the last decades, considerable efforts have been made to modify spontaneous emission using microcavities, photonic crystals or plasmonic nanoantennas. In this thesis, we tackle the problem of enhancement of spontaneous emission by hyperbolic metamaterials nanoantennas. The materials produce large density of states which enhance the transition rate. With transformation optics, we study the use of asymmetrical metamaterials nanoantennas and show how the asymmetry can suppress the spontaneous emission quenching. For arbitrary shaped and lossy anisotropic materials, we derive a modal expansion based on the eigenpermittivity modes and Green’s function to study the scattering and nearfield properties.
DOI: 10.32657/10356/156181
Rights: This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License (CC BY-NC 4.0).
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:EEE Theses

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