Search results
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Title
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A Detailed Description of Keldysh's Model of Photoionization
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Author
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Darden, Kenan
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Date Created
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2023
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Subjects--Topical
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Physics, Optics, Quantum theory
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Description
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Leonid Keldysh’s 1965 paper "Ionization in the Field of a Strong Electromagnetic Wave" contains useful and simple-to-implement equations predicting the rate of photoionization in both atomic gasses and general crystalline solids. Crucially, his re...
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Title
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A SINGLE-PIXEL HYPERSPECTRAL IMAGING SYSTEM FOR CANCER MARGIN DETECTION
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Author
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Peller, Joseph
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Date Created
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2018
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Subjects--Topical
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Optics, Physics
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Description
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We have developed a hyperspectral imaging (HSI) system based on a single pixel camera design to detect differences in tissue properties based on the optical reflectance and autofluorescence spectra of the tissue. The long-term goal of this project...
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Title
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CHARACTERIZATION OF LIGHT-META STRUCTURE INTERACTIONS
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Author
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Chandra, Nitish
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Date Created
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2018
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Subjects--Topical
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Optics, Physics
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Description
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The advent of metamaterials has increased the complexity of possible light-matter interactions, creating gaps in knowledge and violating various commonly used approximations and rendering some common mathematical frameworks incomplete. Our forward...
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Title
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Controlled coherence plasmonic light sources
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Author
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Gbur, Greg, Smith, Matt
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Date Created
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2021
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Subjects--Topical
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Physics, Optics
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Description
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Through a computational model, we study the coherence converting capabilities of an array of holes in a surface plasmon-supporting metal plate, with an eye towards the creation of controlled coherence plasmonic light sources. We evaluate how the a...
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Title
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Cycle of phase, coherence and polarization singularities in Young's three-pinhole experiment
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Author
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Gbur, Greg, Pang, Xiaoyan, Visser, Taco D.
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Date Created
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2015
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Subjects--Topical
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Physics, Optics
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Description
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It is now well-established that a variety of singularities can be characterized and observed in optical wavefields. It is also known that these phase singularities, polarization singularities and coherence singularities are physically related, but...
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Title
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Dynamic aerosol and dynamic air-water interface curvature effects on a 2-Gbit/s free-space optical link using orbital-angular-momentum multiplexing
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Author
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Gbur, Greg, Song, Haoqian, Zhang, Runzhou, Hu, Nanzhe
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Date Created
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2022
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Subjects--Topical
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Physics, Optics
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Description
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When an orbital-angular-momentum (OAM) beam propagates through the dynamic air-water interface, the aerosol above the water and the water surface curvature could induce various degradations (e.g., wavefront distortion, beam wandering, scattering, ...
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Title
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Evaluation of Spatial Resolution and The Non-Linearity Analysis for 3-D Metrology
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Author
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Jain, Swati
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Date Created
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2021
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Subjects--Topical
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Optics, Physics
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Description
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Structured light systems (SLS) have become increasingly important for three-dimensional shape measurements. A quantitative evaluation of the spatial resolution is also becoming increasingly important. The spatial frequency response of the instrume...
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Title
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Exploiting Metamaterials: Fundamentals and Applications
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Author
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Karami, Morteza
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Date Created
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2017
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Subjects--Topical
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Optics, Physics, Electromagnetism
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Description
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Metamaterials are man-made structures developed to engineer electromagnetic waves, and they have been studied intensely in recent decades. Although there are still debates about the performance of these types of artificial materials, many practica...
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Title
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Femtosecond Laser-Induced Breakdown of Monolayer Molybdenum Disulfide
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Author
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Solomon, Joel
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Date Created
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2022
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Subjects--Topical
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Optics, Materials science, Physics
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Description
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Two-dimensional materials such as graphene and transition metal dichalcogenides (TMDs) have been extensively studied due to their extraordinary electronic and optoelectronic properties. In particular, monolayer semiconductor TMDs such as MoS2, WS2...
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Title
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Fractional vortex Hilbert's Hotel
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Author
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Gbur, Greg
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Date Created
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2016
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Subjects--Topical
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Physics, Optics
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Description
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We demonstrate how the unusual mathematics of transfinite numbers, in particular, a nearly perfect realization of Hilbert's famous hotel paradox, manifests in the propagation of light through fractional vortex plates. It is shown how a fractional ...
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Title
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Freeform Optical Surface Form Metrology with Serial Data Acquisition
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Author
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Noste, Todd
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Date Created
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2021
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Subjects--Topical
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Mechanical engineering, Optics, Physics
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Description
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Freeform optics, or optics with no axis of rotational invariance, provide optical designers more degrees of freedom, flexibility, and opportunity for innovation increasing optical performance and system integration while decreasing the form factor...
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Title
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From Nonradiating Sources to Directionally Invisible Objects
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Author
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Hurwitz, Elisa
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Date Created
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2017
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Subjects--Topical
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Optics, Physics
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Description
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The goal of this dissertation is to extend the understanding of invisible objects, in particular nonradiating sources and directional nonscattering scatterers. First, variations of null-field nonradiating sources are derived from Maxwell's equatio...
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Title
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High order plasmonic vortex generation based on spiral nanoslits
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Author
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Gbur, Greg, Yu, Jiayi, Fang, Jing, Cai, Yangjian
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Date Created
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2021
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Subjects--Topical
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Physics, Optics
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Description
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Highly localized plasmonic vortices carrying orbital angular momentum are of importance for many applications. Yet, it is a challenge to generating plasmonic vortex with a high topological charge because of no available technique. Here, a novel pl...
