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 114 for “"light-matter interactions"”.
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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, …
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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. …
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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 …
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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 …
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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 …
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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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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 …
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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 …
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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 …
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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 …
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Nanoscale light-matter interactions in anisotropic van der Waals crystals
La óptica estudia las propiedades y el comportamiento de la luz, permitiendo entender una gran variedad de fenómenos ópticos naturales y desarrollando nuevas tecnologías transformadoras. Sus innovaciones impactan áreas diversas como la astronomía, soluciones energéticas, láseres médicos o la …
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Nonlinear Light - Matter Interactions of Ultrafast High Intensity Laser Pulses
… nonlinear optical effects that arise from the interactions of intense ultrafast laser pulses with various states of matter. These interactions involve electronic and molecular states and yield new information on the underlying fundamental processes that govern the molecular world. Modern day …
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Exploiting the Spin Of Photons and Electrons in Light-Matter Interactions
In light-matter interaction, the conservation law of angular momentum requires the transfer of angular momentum of light to matter, which consequently couples light polarization to various state variables of materials, such as mechanical mo- tion, magnetization or charge current, thus gives rise to …
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Time-domain Modeling of Light Matter Interactions in Active Plasmonic Metamaterials
… the effects of dynamically changing media on light propagation, numerous modeling methods have been developed. Among them, due to the nature of transient, nonlinear, and impulsive behavior, the time domain modeling approach is viewed as the most viable method. In this work, we develop a …
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Light-matter interactions of two-dimensional materials and the coupled nanostructures
… can be largely attributed to the fundamental light-matter interactions. This thesis project uses spectroscopy techniques and focuses on the study of the light-matter interaction in 2D materials, as well as their coupling with other nanostructures, which are essential in achieving useful …
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Shaping light-matter interactions for free-electron radiation and photonic computing
… among other things, the design of novel light sources, detectors, and devices controlling the polarization, spectral, and angular distribution of light. A landmark of nanophotonics is the design of nanostructured materials (metasurfaces, photonic crystals, single resonators, etc.) to …
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Chip-scale Photonic Devices for Light-matter Interactions and Quantum Information Processing
… microdisks, photonic crystal cavities and slow-light photonic crystal waveguides possess strong light localization and long photon lifetime, which will significantly enhance the light-matter interactions and can be used to implement new functionalities for both classical and quantum information …
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Multi-pulse nonlinear optical spectroscopy and light-matter interactions in layered materials.
The interaction between light and matter is one that underscores many applications from solar energy conversion to optical sensing of biological materials. The use of multiple pulses to study these interactions are especially useful in understanding the nonlinear optical properties of materials. …
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