Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 75 for “"light-matter interaction"”.
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Nanophotonics for tailoring light-matter interaction/
… 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 …
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Nanoscale light-matter interaction of ultrathin materials
… a unified microscopic framework to explore light–matter interactions in such hybrids when electric fields approach the nanoscale, where classical and local electrodynamics give way to quantum and nonlocal material responses. We begin by deriving the optical response from the Heisenberg …
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Light-matter interaction in silicon nanophotonic structures
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 …
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Light–matter interaction in liquid crystal cells
In this thesis we study the interactions between light and matter in photorefractive liquid crystal<br/>cells. To model the liquid crystal alignment we develop a fast and accurate approximation of<br/>the normally stiff equations which minimise the Landau-deGennes free energy of a …
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Controlling light-matter interaction with resonant semiconductor nanostructure
… electronic properties to obtain full control of light-matter interaction at the nanoscale. The outcomes may open the way for tunable, ultra-thin, cost-effective, and energy-saving optoelectronic devices. This research first studies the optical modes of dielectric nanostructures, including …
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Engineering light-matter interaction using two dimensional materials
… this thesis, I will show a few examples of how light-matter interaction can be engineered in 2D materials, through the modification of both microscopic as well as macroscopic properties of such materials. I describe how the plasmons in graphene are modified by coupling with the optical phonons …
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Plasmonic nanostructures and metamaterials for nanoscale light-matter interaction
… objective of this dissertation is to study the light-matter interaction phenamena at nanoscale in the presence of plasmonic nanostructures and metamaterials. Using the principles of nano-optics, a range of plasmonic nanodevices are developped for molecular sensing, nonlinear optics and surface …
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Linking confined electron spins through coherent light-matter interaction.
Electron spins confined to self-assembled quantum dots are considered as nodes for a coherent optical network capable of supporting distributed quantum states. Through a series of experiments, the work contributing to this dissertation examines some of the key criteria for constructing such a …
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Strong Light-Matter Interaction with Cavities for Quantum Information Processing
Strong light-matter interaction enabled many modern technologies such as precision metrology, light sources, optical communication and spectroscopy. Normally, the coupling between materials and photons in free-space is weak, limiting the performance of these applications. Photonic cavities can …
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Topological photonic metasurfaces for light manipulation and strong light-matter interaction
… properties with excitations of condensed matter systems, like van der Waals or 2D materials. In this dissertation results for design, fabrication and experimental investigation of photonic spin-Hall topological metasurfaces and their integration with 2D materials are demonstrated.</p> …
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Nanoparticle-nanoparticle interactions and light-matter interaction studied by simulated absorption spectroscopy
… and other materials. Understanding plasmon interactions, plasmon-induced excitation energy transfer, and excited state dynamics of molecular plasmons are goals of this thesis. Utilizing efficient tight-binding calculations, the absorption spectra of homodimer and heterodimer nanoparticles …
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Three-dimensional periodic structures for enhancing light-matter interaction and energy storage
… ranging from manipulating the flow of light for integrated photonics to high power and high energy batteries. Among the approaches to fabricate 3D meso-structured materials, colloidal self-assembly and holographic lithography are particularly attractive owing to their ability to create …
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Manipulation of Light-Matter Interaction in Two-Dimensional Systems via Localized Surface Plasmons
… of optoelectronics due to its ability to confine light down to nanoscale without a diffraction limit. As light-matter interaction in nanoscale is becoming more important due to the demand in scaling down the optoelectronic devices, my thesis describes the work on manipulation of such light-matter …
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Cavity Plasmonics - Exploring narrow-gap plasmonic coupled systems to boost, localize and exploit nanometric light -matter interaction
… Plasmonic cavities have the ability to confine light beyond the diffraction limit via collective charge oscilla- tions at dielectric-metal interface. This thesis explores different ways to boost, localize and exploit nanometric light-matter interactions in the NPoM configuration. Due to their …
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Generation and imaging of structural laser beams for optical trapping of airborne particles and light-matter interaction applications.
… have extended the `optical toolbox' in laser interaction with matter studies, providing many techniques that are not possible using conventional Gaussian beams. The research work performed under this thesis focuses on the design, generation, re-configuration, and exploration of the flexibility …
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Generation and imaging of structural laser beams for optical trapping of airborne particles and light-matter interaction applications.
… have extended the `optical toolbox' in laser interaction with matter studies, providing many techniques that are not possible using conventional Gaussian beams. The research work performed under this thesis focuses on the design, generation, re-configuration, and exploration of the flexibility …
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OPTICAL PROPERTIES OF 2D TRANSITION METAL DICHALCOGENIDES ENHANCED BY PLASMONIC NANOSTRUCTURES
… However, being atomically thin limits light-matter interaction in 2D TMDCs, resulting in low light-to-light or light-to-electron conversion efficiency. In this thesis, we significantly improved the light-to-light conversion efficiency in WSe2 via enhancing its photoluminescence (PL) and …
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Light-matter interactions in all-dielectric silicon nanoresonators
The ability to control light fields on a spatial scale far smaller than the wavelength of light has witnessed growing interest in recent years. This field has been driven by the advances in electronics and nanoscience that allow the precise sculpting of materials with precision down to the …
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