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.
Results
Showing 1 to 20 of 192 for “"light-matter"”.
-
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 …
-
Light-Matter Interactions with Photonic Quasiparticles
The interactions of matter with electromagnetic fields underlie very many physical phenomena. The physics of these interactions is greatly simplified by their weakness, enabling us to understand them largely at the lowest order in various parameters (e.g., field strength, atomic size, …
-
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 …
-
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 …
-
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 …
-
Enhancing light-matter interactions in oxide semiconductors
… have shown successful records as an active light-absorbing layer or transport layer in many photovoltaic and photocatalytic devices, their relatively large optical band gap and limited tunability in intrinsic electronic properties remain to be overcome for more broad range of applications. …
-
Understanding new regimes for light-matter interactions
… and phenomena involved in the interaction of light with a variety of complicated material systems, including biomaterials and nanostructured materials. We will show that bone piezoelectricity may be a source of intense blast-induced electric fields in the brain, with magnitudes and timescales …
-
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 …
-
Enhanced Light-Matter Interactions in Complex Photonic Systems
<p>Interactions between light and matter are fundamental to breakthroughs in lasers, sensing, imaging, spectroscopy, energy harvesting, and quantum information processing. As a result, significant recent efforts have been geared towards enhancing and controlling light-matter interactions to advance …
-
Quantum Dynamics of Strong Field Light-Matter Interactions
… study explores exactly solvable models for the light-matter interactions in the strong-field regime. These investigations provided us with valuable insights into long-debated problems related to quantum tunneling, namely, the quantum tunneling time and momentum i.e., the ongoing debate in the …
-
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 …
-
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 …
-
Building efficient light-matter interfaces for quantum systems
Efficient collection of photons from quantum memories, such as quantum dots (QDs) and nitrogen vacancy (NVs) centers in diamond, is essential for various quantum technologies. This thesis describes the design, fabrication, and utilization of novel photonic structures and systems to achieve …
-
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 …
-
Control of Light-Matter Interactions via Nanostructured Photonic Materials
… thesis here investigates the manipulation of light-matter interactions via nanoscale engineering of material systems. When material systems are structured on the nanoscale, their optical responses can be dramatically altered. In this thesis, this is done in two primary ways: One method is by …
-
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 …
-
Engineering and characterizing light-matter interactions in photonic crystals
… crystals can affect the behavior of visible light, and other electromagnetic waves, in ways that are not possible by other means. The propagation of photons can be completely forbidden or the the light can be made to follow a well- defined path. Fluorescent emission can be enhanced for some …
-
THz polaritonics : control, confinement, and strong light-matter interactions
… these features: photonic structures and strong light-matter coupling. In the first phase, we developed a fabrication procedure to pattern high-aspect ratio, optical-quality air holes into slabs of LN and LT, which has been historically difficult to achieve. We then studied the nature of THz wave …
-
Coherent light-matter interactions in monolayer transition-metal dichalcogenides
… split their energy levels by means of coherent light-matter interactions. Experiments were performed in a pump-probe technique using a transient absorption spectroscopy on MoS2 and WS2, and a newly developed XUV light source for time and angle-resolved photoemission spectroscopy (TR-ARPES) on …
Page 1 of 10