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Dissertations / Theses on the topic 'Light-matter interaction'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

Kjellsson, Lindblom Tor. "Relativistic light-matter interaction." Doctoral thesis, Stockholms universitet, Fysikum, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-147749.

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During the past decades, the development of laser technology has produced pulses with increasingly higher peak intensities. These can now be made such that their strength rivals, and even exceeds, the atomic potential at the typical distance of an electron from the nucleus. To understand the induced dynamics, one can not rely on perturbative methods and must instead try to get as close to the full machinery of quantum mechanics as practically possible. With increasing field strength, many exotic interactions such as magnetic, relativistic and higher order electric effects may start to play a s

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2

Armata, Federico. "Light matter interaction in mesoscopic systems." Thesis, Imperial College London, 2017. http://hdl.handle.net/10044/1/55876.

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The study of light-matter interaction has led to many fundamental discoveries as well as to the development of new technology. In this thesis, we investigate the interaction between light and matter in different mesoscopic systems such us Fabry-Perot cavities with fixed and/or moving mirrors (optomechanical cavities) and superconducting circuits. In the context of optomechanical cavities, we isolate genuine quantum contributions of the interaction between an optical field and a mechanical mirror and study how to probe nonlinearities of the mechanical motion. We also investigate dynamical corre

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3

Qiu, Wenjun. "Nanophotonics for tailoring light-matter interaction/." Thesis, Massachusetts Institute of Technology, 2013. http://hdl.handle.net/1721.1/79541.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Physics, 2013.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (p. 105-112).<br>In this thesis, we will theoretically explore three nanophotonics phenomena which enable strong light-matter interaction. The first phenomenon is plasmonic resonance, where the surface plasmon mode at metal and dielectric boundaries significantly enhances the optical response of nanoparticles. We propose an optimization-based theoretical approach to tailor the optical response of silver/silica multilayer nanospheres ove

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4

Akhileswaran, Aji Anappara. "Light-matter interaction in intersubband microcavities." Doctoral thesis, Scuola Normale Superiore, 2008. http://hdl.handle.net/11384/85841.

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The research work presented in this thesis is focused on the study of the optoelectronic coupling between the intersubband excitation in a two-dimensional electron gas (2DEG) and the resonant photonic mode of a planar semiconductor microcavity, in which the 2DEGs are embedded. When a generic electronic excitation interacts resonantly with a discrete cavity mode, a strong-coupling regime arises if the interaction strength of the electron-photon system (vacuum-field Rabi energy) is larger than the damping rates. This condition has been demonstrated in diverse research fields: from atomic p

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5

Grossmann, Cornelius. "Light-matter interaction in ultacompact semiconductor microcavities." Thesis, University of Cambridge, 2013. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.648188.

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6

Daly, Keith Richard. "Light-matter interaction in liquid crystal cells." Thesis, University of Southampton, 2011. https://eprints.soton.ac.uk/176449/.

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In this thesis we study the interactions between light and matter in photorefractive liquid crystal cells. To model the liquid crystal alignment we develop a fast and accurate approximation of the normally stiff equations which minimise the Landau-deGennes free energy of a nematic liquid crystal. The resulting equations are suitable for all configurations in which defects are not present, making them ideal for device simulation. Specifically, they offer an increase in computational efficiency by a factor of 100 while maintaining an error of order (10−4) when compared to the full stiff equation

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7

Alhanash, Mirna. "The Thermodynamic Interaction of Light with Matter." Thesis, Uppsala universitet, Tillämpad kärnfysik, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-425132.

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Light is electromagnetic radiation that could be shown in a spectrum with a wide range of wavelengths. Blackbody radiation is a type of thermal radiation and is an important topic to explore due to it being an ideal body that materials’ properties are often described in comparison to it. Therefore, it helps in understanding how materials behave on the quantum level. One must understand its interaction with light spectrum and how electron excitation happens. Thus, concepts such as Planck’s law, energy quantization and band theory will be discussed to try to grasp of how light interacts with mat

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8

Pitanti, Alessandro. "Light-matter interaction in silicon nanophotonic structures." Doctoral thesis, Università degli studi di Trento, 2010. https://hdl.handle.net/11572/368665.

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In this thesis light matter interactions in the weak coupling regime are investigated in Si-based photonic devices. At first, spectroscopic investigation of energy transfer among Er ions and Si-nanoparticles for optical amplification has been reported. Successively, light propagation in dielectric resonator and waveguides has been addressed, in particular considering photon Local Density of States modifications and the possible Purcell enhancement effect.

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Pitanti, Alessandro. "Light-matter interaction in silicon nanophotonic structures." Doctoral thesis, University of Trento, 2010. http://eprints-phd.biblio.unitn.it/208/1/Pitanti_PhDThesis.pdf.

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In this thesis light matter interactions in the weak coupling regime are investigated in Si-based photonic devices. At first, spectroscopic investigation of energy transfer among Er ions and Si-nanoparticles for optical amplification has been reported. Successively, light propagation in dielectric resonator and waveguides has been addressed, in particular considering photon Local Density of States modifications and the possible Purcell enhancement effect.

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10

Kremers, Christian [Verfasser]. "Light Matter Interaction in Nanostructured Materials / Christian Kremers." Wuppertal : Universitätsbibliothek Wuppertal, 2011. http://d-nb.info/1018300236/34.

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11

Kumar, Anshuman Ph D. Massachusetts Institute of Technology. "Engineering light-matter interaction using two dimensional materials." Thesis, Massachusetts Institute of Technology, 2016. http://hdl.handle.net/1721.1/103489.

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Thesis: Ph. D., Massachusetts Institute of Technology, Department of Mechanical Engineering, 2016.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (pages 135-150).<br>The recent discovery of a new class of two dimensional(2D) atomic crystals allows the possibility of strong coupling of electromagnetic waves with various collective excitations such as plasmons and phonons, and carries great potential for nanophotonics across the long sought after terahertz to mid-infrared spectrum. In this thesis, I will show a few examples of how light-matter interaction can be

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12

Rahimiangolkhandani, Mitra. "Interaction of Structured Femtosecond Light Pulses with Matter." Thesis, Université d'Ottawa / University of Ottawa, 2021. http://hdl.handle.net/10393/42334.

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Physics and potential applications of femtosecond laser pulses interacting with matter have captured interest in various fields, such as nonlinear optics, laser micromachining, integrated optics, and solar cell technologies. On the one hand, such ultrashort intense pulses make them practical elegant tools to be utilized for direct structuring of materials with high accuracy and numerous potential applications. On the other hand, studying the fundamental aspects and nonlinear nature of such interactions opens new remarkable venues for various unique investigations. In recent years, the emerging

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13

Safari, Akbar. "Resonant Light-Matter Interaction for Enhanced Control of Exotic Propagation of Light." Thesis, Université d'Ottawa / University of Ottawa, 2019. http://hdl.handle.net/10393/39057.

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We investigate the propagation of light in different conditions that lead to exotic propagation of photons and use near-resonant light-matter interactions to enhance these effects. First, we study the propagation of light in a moving highly dispersive medium, namely rubidium atoms. Based on the special relativity the speed of light changes with the speed of the medium. However, this drag effect in a non-dispersive medium is very small and thus difficult to measure. We show that the drag effect is enhanced significantly when the moving medium is highly dispersive. Thus, with this enhance

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14

Tang, Yiqiao. "Chirality of Light and Its Interaction with Chiral Matter." Thesis, Harvard University, 2012. http://dissertations.umi.com/gsas.harvard:10672.

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This thesis conducts a systematic study on the chirality of light and its interaction with chiral matter. In the theory section, we introduce a measure of local density of chirality, applying to arbitrary electromagnetic fields. This optical chirality suggests the existence of superchiral modes, which are more selective than circularly polarized light (CPL) in preferentially exciting single enantiomers in certain regions of space. Experimentally, we demonstrate an 11-fold enhancement over CPL in discriminating chiral fluorophores of single handedness in a precisely sculpted superchiral field.

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15

Köhler, Christian. "Ultrashort Light Sources from High Intensity Laser-Matter Interaction." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2012. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-88076.

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The thesis deals with the development and characterization of new light sources, which are mandatory for applications in atomic and molecular spectroscopy, medical and biological imaging or industrial production. For that purpose, the employment of interactions of high intensity ultra-short laser pulses with gaseous media offers a rich variety of physical effects which can be exploited. The effects are characterized by a nonlinear dependency on the present light fields. Therefore, accurate modeling of the nonlinearities of the gas is crucial. In general, the nonlinearities are due to the elec

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16

SANTOS, PALOMA OLIVEIRA DE CARVALHO. "DONALD JUDD: COLOR AS INTERACTION BETWEEN MATTER AND LIGHT." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2005. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=7672@1.

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PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO<br>A nossa análise da obra de Donald Judd visa explicitar como a luz, que incide e se propaga sobre as superfícies internas e externas de suas peças, era concebida pelo artista como parte constitutiva de sua estrutura física. A dissertação acompanha, assim, a tendência recente do debate crítico de encontrar um conceito inovador de cor na obra de Donald Judd, que até pouco tempo atrás era tomada como a representante máxima de um minimalismo ortodoxo, distante de todo e qualquer apelo sensível. A nossa leitura procura argumentos críticos

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17

Gies, Christopher. "Theory for light matter interaction in semiconductor quantum dots." kostenfrei, 2008. http://d-nb.info/989990303/34.

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18

Noaman, Mohammad [Verfasser]. "Strong light-matter interaction in confined geometries / Mohammad Noaman." Mainz : Universitätsbibliothek der Johannes Gutenberg-Universität Mainz, 2020. http://d-nb.info/122489555X/34.

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19

Borri, Paola [Verfasser]. "Coherent Light-Matter Interaction in Semiconductor Quantum Dots / Paola Borri." Aachen : Shaker, 2004. http://d-nb.info/1172609918/34.

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20

Schulte, Carsten Heinrich Hermann. "Investigations of coherent light-matter interaction using an artificial atom." Thesis, University of Cambridge, 2015. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.709128.

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21

Gehl, Michael R. "Controlling Light-Matter Interaction in Semiconductors with Hybrid Nano-Structures." Diss., The University of Arizona, 2015. http://hdl.handle.net/10150/581325.

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Nano-structures, such as photonic crystal cavities and metallic antennas, allow one to focus and store optical energy into very small volumes, greatly increasing light-matter interactions. These structures produce resonances which are typically characterized by how well they confine energy both temporally (quality factor–Q) and spatially (mode volume–V). In order to observe non-linear effects, modified spontaneous emission (e.g. Purcell enhancement), or quantum effects (e.g. vacuum Rabi splitting), one needs to maximize the ratio of Q/V while also maximizing the coupling between the resonance

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22

Brown, Jeffrey Michael. "Exactly Solvable Light-Matter Interaction Models for Studying Filamentation Dynamics." Diss., The University of Arizona, 2016. http://hdl.handle.net/10150/612844.

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This dissertation demonstrates the usefulness of exactly solvable quantum models in the investigation of light-matter interaction phenomena associated with the propagation of ultrashort laser pulses through gaseous media. This work fits into the larger research effort towards remedying the weaker portions of the standard set of medium modeling equations commonly used in simulations. The ultimate goal is to provide a self-consistent quantum mechanical description that can integrate Maxwell and Schrödinger systems and provide a means to realistically simulate nonlinear optical experiments on rel

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23

Schwarz, Stefan. "Microcavity-enhanced light-matter interaction in van der Waals heterostructures." Thesis, University of Sheffield, 2016. http://etheses.whiterose.ac.uk/12278/.

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The recently emerging layered two-dimensional materials provide a new material class for novel opto-electronic devices. These materials have a unique crystal structure with strong intra-layer bonding and weak van der Waals inter-layer bonding. This allows to thin down the crystal to single atomic layer thickness using an adhesive tape. With the discovery of this method to produce stable monolayer sheets of graphene and the observation of its remarkable properties, a new research area started to develop. Besides graphene there is a whole class of two-dimensional materials with similar crystal s

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24

Müller, Sven Niclas Tebogo [Verfasser]. "Tailoring Plasmon-Enhanced Light-Matter Interaction / Sven Niclas Tebogo Müller." Berlin : Freie Universität Berlin, 2020. http://d-nb.info/1212435699/34.

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25

Sangal, Maitreyi [Verfasser], and Christoph H. [Akademischer Betreuer] Keitel. "The interaction of Light with Matter and Light with Light / Maitreyi Sangal ; Betreuer: Christoph H. Keitel." Heidelberg : Universitätsbibliothek Heidelberg, 2021. http://d-nb.info/1228700710/34.

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26

Kozyreff, Gregory. "Nonlinear aspects of the dynamics induced by dissipative light-matter interaction." Doctoral thesis, Universite Libre de Bruxelles, 2001. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/211644.

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Dans cette thèse, nous avons appliqué les outils modernes de la théorie des systèmes dynamiques à l'étude des lasers. Le but de ce travail était de mieux comprendre les sources cohérentes existantes en vue de les améliorer et de proposer de nouveaux mécanismes d'amplification lumineuse.<p><p>Motivé par de récentes expériences menées sur des lasers miniatures avec absorbant saturable, nous en avons repris la description théorique. Les nouvelles valeurs de paramètres suggérées par l'expérience nous ont amenés à découvrir de nouveaux comportements dynamiques pour ces systèmes. En particulier, nou

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27

MANFREDI, GIOVANNI. "Organic & Hybrid Photonic Crystals for Controlling Light-Matter Interaction Processes." Doctoral thesis, Università degli studi di Genova, 2018. http://hdl.handle.net/11567/929956.

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28

Babushkin, Ihar [Verfasser]. "Light-matter interaction on the few- and sub-cycle timescale / Ihar Babushkin." Hannover : Gottfried Wilhelm Leibniz Universität Hannover, 2018. http://d-nb.info/1172414459/34.

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29

Dadi, Anis [Verfasser], and Carsten [Akademischer Betreuer] Müller. "Nuclear Processes in Intense Light-Matter Interaction / Anis Dadi ; Betreuer: Carsten Müller." Heidelberg : Universitätsbibliothek Heidelberg, 2012. http://d-nb.info/1179784669/34.

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30

Dolan, Philip R. "Ultra-small open access microcavities for enhancement of the light-matter interaction." Thesis, University of Oxford, 2012. http://ora.ox.ac.uk/objects/uuid:d949537f-cef4-4ee9-aa98-471331857a15.

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The design, construction and characterisation of a novel, arrayed, open-access optical microcavity is described. Included in this thesis are the precise fabrication details, making use of the focused ion beam. A technique for analysing and optimising the microcavities constructed, making use of an atomic force microscope is also included. Results from the optical characterisation of the fabricated microcavities are presented, including quality factors of around 104, and fitnesses of around 400. The optical analysis then progressed onto coupling colloidal semiconductor nanocrystals to the micro

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31

PALEI, MILAN. "Light Matter Interaction in Epsilon Near Zero Metal/Insulator Layered Nanocavities Thesis." Doctoral thesis, Università degli studi di Genova, 2019. http://hdl.handle.net/11567/941314.

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Light-matter interaction has been a widely investigated phenomena enlarging the area of nanophotonics beyond the limit. This stand out to be the back bone for future generation optical devices. Light confinement and propagation in a small volume gives rise to several rich optical properties. This can be realized in different type of nanostructured materials. Metal(M)/Insulator(I) multilayer nanocavities are highly versatile systems for light confinement and wave guiding at nanoscale. Their physical behavior is discussed successfully by electromagnetic theory. However, it is still obscure

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32

Straubel, Jakob [Verfasser], and C. [Akademischer Betreuer] Rockstuhl. "Light-Matter Interaction in Hybrid Quantum Plasmonic Systems / Jakob Straubel ; Betreuer: C. Rockstuhl." Karlsruhe : KIT-Bibliothek, 2018. http://d-nb.info/1162540702/34.

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33

Fischer, Martin [Verfasser], Gerd [Akademischer Betreuer] Leuchs, and Gerd [Gutachter] Leuchs. "Highly Efficient Light-Matter Interaction / Martin Fischer ; Gutachter: Gerd Leuchs ; Betreuer: Gerd Leuchs." Erlangen : Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), 2021. http://d-nb.info/1227711123/34.

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34

Bader, Marianne Verfasser], and Gerd [Gutachter] [Leuchs. "Optimizing free-space light-matter interaction by mode matching / Marianne Bader. Gutachter: Gerd Leuchs." Erlangen : Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), 2016. http://d-nb.info/1107764750/34.

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35

Berger, Kai [Verfasser], and Marcus [Akademischer Betreuer] Magnor. "Measuring, Modeling, And Verification of Light-Matter Interaction Phenomena / Kai Berger ; Betreuer: Marcus Magnor." Braunschweig : Technische Universität Braunschweig, 2012. http://d-nb.info/1175823171/34.

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36

Mansuripur, Masud. "Light-matter interaction: conversion of optical energy and momentum to mechanical vibrations and phonons." SPIE-INT SOC OPTICAL ENGINEERING, 2016. http://hdl.handle.net/10150/622541.

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Reflection, refraction, and absorption of light by material media are, in general, accompanied by a transfer of optical energy and momentum to the media. Consequently, the eigen-modes of mechanical vibration (phonons) created in the process must distribute the acquired energy and momentum throughout the material medium. However, unlike photons, phonons do not carry momentum. What happens to the material medium in its interactions with light, therefore, requires careful consideration if the conservation laws are to be upheld. The present paper addresses some of the mechanisms by which the elect

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Bader, Marianne [Verfasser], and Gerd [Gutachter] Leuchs. "Optimizing free-space light-matter interaction by mode matching / Marianne Bader. Gutachter: Gerd Leuchs." Erlangen : Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), 2016. http://d-nb.info/1107764750/34.

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38

Chen, Hongshi. "Contribution to Active Probe for SNOM and Nanoscale Light-matter Interaction based on Photopolymerization." Electronic Thesis or Diss., Troyes, 2022. http://www.theses.fr/2022TROY0007.

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La microscopie optique en champ proche à balayage (SNOM) est une technologie d'imagerie optique à haute résolution. L'information associée aux hautes fréquences spatiales du champ proche est associée à une haute résolution spatiale, permettant de dépasser la limite de diffraction. Développer une sonde optique locale efficace reste un sujet clé d'actualité qui est abordé depuis longtemps. La thèse porte sur le développement d'une sonde en champ proche active basée sur une pointe polymère intégrée à l'extrémité d'une fibre optique. Nous avons polymérisé une pointe en polymère sur la surface de l

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Chen, Zhihui. "Light manipulation in micro and nano photonic materials and structures." Doctoral thesis, KTH, Teoretisk kemi och biologi, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-94081.

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Light manipulation is an important method to enhance the light-matter interactions in micro and nano photonic materials and structures by generating usefulelectric field components and increasing time and pathways of light propagationthrough the micro and nano materials and structures. For example, quantum wellinfrared photodetector (QWIP) cannot absorb normal incident radiation so thatthe generation of an electric field component which is parallel to the original incident direction is a necessity for the function of QWIP. Furthermore, the increaseof time and pathways of light propagation in t

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40

Guay, Jean-Michel. "Multiphoton Microscopy and Interaction of Intense Light Pulses with Polymers." Thèse, Université d'Ottawa / University of Ottawa, 2011. http://hdl.handle.net/10393/20062.

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The nanoscale manipulation of soft-matter, such as biological tissues, in its native environment has promising applications in medicine to correct for defects (eg. eye cataracts) or to destroy malignant regions (eg. cancerous tumours). To achieve this we need the ability to first image and then do precise ablation with sub-micron resolution with the same setup. For this purpose, we designed and built a multiphoton microscope and tested it on goldfish gills and bovine cells. We then studied light-matter interaction on a hard polymer (PMMA) because the nature of ablation of soft-matter in its na

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Golla, Andrea [Verfasser], and Gerd [Akademischer Betreuer] Leuchs. "Building blocks for efficient light-matter interaction in free space / Andrea Golla. Gutachter: Gerd Leuchs." Erlangen : Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), 2014. http://d-nb.info/1065270275/34.

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Drégely, Daniel [Verfasser], and Harald [Akademischer Betreuer] Giessen. "Optical antennas : nanoscale radiation engineering and enhanced light-matter interaction / Daniel Drégely. Betreuer: Harald Giessen." Stuttgart : Universitätsbibliothek der Universität Stuttgart, 2014. http://d-nb.info/1049688775/34.

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43

Yu, Xiaoming. "Laser micro/nano machining based on spatial, temporal and spectral control of light-matter interaction." Diss., Kansas State University, 2016. http://hdl.handle.net/2097/32928.

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Doctor of Philosophy<br>Department of Industrial & Manufacturing Systems Engineering<br>Shuting Lei<br>Lasers have been widely used as a manufacturing tool for material processing, such as drilling, cutting, welding and surface texturing. Compared to traditional manufacturing methods, laser-based material processing is high precision, can treat a wide range of materials, and has no tool wear. However, demanding manufacturing processes emerging from the needs of nano and 3D fabrication require the development of laser processing strategies that can address critical issues such as machining reso

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Hargart, Fabian [Verfasser]. "Enhanced light-matter interaction with semiconductor quantum dots in single and double cavity structures / Fabian Hargart." München : Verlag Dr. Hut, 2017. http://d-nb.info/1135596182/34.

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45

Poudel, Yuba R. "Manipulation of Light-Matter Interaction in Molybdenum Disulfide (MoS2) Monolayer through Dressed Phonons (DP) and Plasmons." Thesis, University of North Texas, 2019. https://digital.library.unt.edu/ark:/67531/metadc1609107/.

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The performance of electrical and optical devices based on two-dimensional semiconductors (2D) such as molybdenum disulfide is critically influenced due to very poor light absorption in the atomically thin layers. In this study, the phonon mediated optical absorption and emission properties in single atomic layers of MoS2 have been investigated. The electronic transitions in MoS2 due to near-field optical interaction and the influence of interface phonons due to the dielectric substrate GaN on the relaxation of optically generated carriers will be described. The near-field interaction can be i

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46

Nesrallah, Michael. "Kerr Nonlinear Instability: Classical and Quantum Optical Theories." Thesis, Université d'Ottawa / University of Ottawa, 2019. http://hdl.handle.net/10393/39432.

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An important aspect of third-order optical nonlinearity is the intensity-dependent refractive index, where the intensity of the light itself affects the refractive index. This nonlinear effect is known as Kerr nonlinearity. In this work, a theory of amplification based on Kerr nonlinearity is developed. Kerr nonlinearity is well known to exhibit instability. Our amplification theory is based on seeding this instability. The full theory is developed to obtain the vectorial wave equations of the instability. It is shown that for materials of interest, vectorial effects are negligible across the

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47

Stöhr, Rainer [Verfasser]. "Light-matter interaction in graphene: A new playground for nonlinear optics, metrology and nanoscale device fabrication / Rainer Stöhr." München : Verlag Dr. Hut, 2012. http://d-nb.info/1028786344/34.

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48

Groß, Heiko [Verfasser], Bert [Gutachter] Hecht, and Matthias [Gutachter] Bode. "Controlling Light-Matter Interaction between Localized Surface Plasmons and Quantum Emitters / Heiko Groß ; Gutachter: Bert Hecht, Matthias Bode." Würzburg : Universität Würzburg, 2019. http://d-nb.info/1200856244/34.

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49

Poudel, Yuba R. "Manipulation of Light-Matter Interactions in Molybdenum Disulfide (MoS2) Monolayer through Dressed Phonons (DP) and Plasmons." Thesis, University of North Texas, 2019. https://digital.library.unt.edu/ark:/67531/metadc1609107/.

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The performance of electrical and optical devices based on two-dimensional semiconductors (2D) such as molybdenum disulfide is critically influenced due to very poor light absorption in the atomically thin layers. In this study, the phonon mediated optical absorption and emission properties in single atomic layers of MoS2 have been investigated. The electronic transitions in MoS2 due to near-field optical interaction and the influence of interface phonons due to the dielectric substrate GaN on the relaxation of optically generated carriers will be described. The near-field interaction can be i

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50

Aglieri, Vincenzo. "TAPERING RESONANT NANOANTENNAS FOR ENHANCED THz LIGHT – NANOMATTER INTERACTIONS." Doctoral thesis, Università degli Studi di Palermo, 2020. http://hdl.handle.net/10447/426934.

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Nel corso degli ultimi decenni la tecnologia terahertz (THz) è diventata un fruttuoso campo di ricerca grazie alla spinta ricevuta dal desiderio di sfruttarne le promettenti applicazioni in questa porzione dello spettro elettromagnetico. La biologia, la medicina e l’ingegneria sono soltanto alcuni dei settori che guardano con interesse alle ultime scoperte nella ricerca sulle onde THz. Questo enorme interesse nasce dalle peculiari proprietà di tali onde, come ad esempio: il carattere non ionizzante, l’opacità di svariati materiali solitamente trasparenti in altri intervalli di frequenze e per

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