Search results
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Title
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Index-antiguided planar waveguide lasers with large mode area
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Author
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Liu, Yuanye
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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 on-going research and application interests with high power large-mode-area (LMA) waveguide lasers, especially in fiber geometry, at the beginning of this century drive the development of many novel waveguide designs. Index antiguiding, propos...
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Title
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Insights Derived From Studies on the Interaction of Wall Jets With an Elevated Hump Wake
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Author
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Sehman, Sean
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Date Created
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2020
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Subjects--Topical
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Mechanical engineering, Physics, Fluid mechanics
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Description
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ABSTRACTSEAN M. SEHMAN. Insights Derived from Studies on the Interaction of Wall Jets with an Elevated Hump Wake (Under the Direction of DR. MESBAH UDDIN) Underneath a travelling road vehicle, a channel flow develops between the road and the under...
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Title
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Instrumentation, techniques, and evaluation of ePTV for particle manipulation studies using micro-scale oscillators
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Author
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Kafashi, Sajad
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Date Created
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2017
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Subjects--Topical
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Mechanical engineering, Electrical engineering, Physics
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Description
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A need for dynamic micro-particle manipulation is the ability to position fragile particles without damaging them, for instance biological particles like blood cells, stem cells, neurons, pancreatic β cells, DNA, chromosomes, for repeated measurem...
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Title
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Investigation of impedance-matching techniques for infrared antennas
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Author
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Moreno Cleves, Camilo
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Date Created
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2020
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Subjects--Topical
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Electrical engineering, Optics, Physics
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Description
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In this study, we used scattering-scanning near-field optical microscopy (s-SNOM) to experimentally characterize several structures relevant to infrared (IR) antenna technology, by measuring the electric near-field strength as a function of positi...
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Title
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Investigations of Coherence and Structured Light
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Author
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Mays, Joseph
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Date Created
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2023
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Subjects--Topical
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Optics, Mathematics, Physics
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Description
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The combination of singular optics and partially coherent fields has become increasingly important in the applications of optical communication and optical imaging. Within this, we focus on the phenomena of optical vortices. We use and study the p...
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Title
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Massive parallel sorting of particles using unwound polygonal vortex beams
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Author
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Gbur, Greg
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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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Optical sorting, as one kind of optical tweezers, is used to separate mixed particles in a background environment. This unusual tool has a wide application prospect because the non-contact and non-destructive advantages ideally suit the pressing n...
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Title
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Metasurfaces for Field Control and Detection
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Author
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Rosenbury, Christopher
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Date Created
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2018
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Subjects--Topical
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Optics, Nanoscience, Physics
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Description
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Metasurfaces have been of increasing interest in the scientific community due to their consistent ability to efficiently reproduce traditional optical elements via quasi-monolithic patterning. In this dissertation I will examine various metasurfac...
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Title
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Multiple-stage structure transformation of organic-inorganic hybrid Perovskite CH3NH3PbI3
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Author
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Zhang, Y. (Yong), 1960-, Chen, Qiong, Kim, Hui-Seon, Liu, Yucheng, Yang, Mengjin, Yue, Naili, Ren, Gang, Zhu, Kai, Lu, Shengzhong, Park, Nam-Gyu
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Subjects--Topical
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Physics, Perovskite
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Description
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By performing spatially resolved Raman and photoluminescence spectroscopy with varying excitation wavelength, density, and data acquisition parameters, we achieve a unified understanding towards the spectroscopy signatures of the organic-inorganic...
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Title
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NONPROPAGATING EXCITATIONS IN 2-D
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Author
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Abney, Ray
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Date Created
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2020
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Subjects--Topical
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Physics
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Description
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Nonpropagating excitations have been studied in 1-D and in 3-D, but not so much in 2-D. So, this thesis concerns 2-D nonpropagating excitations. In particular, we construct nonpropagating excitations confined to an annulus under a time-independent...
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Title
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Optical super-resolution and periodical focusing effects by dielectric microspheres
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Author
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Darafsheh, Arash
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Date Created
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2013
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Subjects--Topical
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Optics, Physics, Biomedical engineering
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Description
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Optical microscopy is one of the oldest and most important imaging techniques; however, its far-field resolution is diffraction-limited. In this dissertation, we proposed and developed a novel method of optical microscopy with super-resolution by ...
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Title
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Optically Projected Length Scale for Use in Photogrammetry
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Author
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Thewlis, Patrick
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Date Created
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2020
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Subjects--Topical
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Optics, Physics
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Description
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Photogrammetry is a measurement technique where 3D coordinate data and feature information can be extracted from 2D photographs or images. Length scale objects are calibrated artifacts placed into a photogrammetry scene which have precisely define...
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Title
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Partially coherent radially polarized fractional vortex beam
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Author
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Gbur, Greg, Zeng, Jun, Liang, Chunhao, Cai, Yangjian
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Date Created
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2020
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Subjects--Topical
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Physics, Optics
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Description
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A new kind of partially coherent vector beam, named a partially coherent radially polarized fractional vortex (PCRPFV) beam, is introduced as a natural extension of the recently introduced scalar partially coherent fractional vortex beams [Zeng et...
