Search results
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Title
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FIBER BASED TOOLS FOR POLISHING OPTICAL MATERIALS
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Author
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Shahinian, Hossein
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Date Created
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2018
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Subjects--Topical
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Mechanical engineering, Optics
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Description
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In this dissertation, the development of alternative fiber based polishing tools for the finishing of precision freeform and aspherical optics is introduced. Freeform and aspherical optics, i.e. optics with varying radius of curvatures (ROC), are ...
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Title
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FOCUSING, IMAGING AND RESONACE PROPERTIES OF MICROPHOTONICS STRUCTURES AND DEVICES
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Author
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Abolmaali, Farzaneh
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Date Created
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2018
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Subjects--Topical
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Optics
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Description
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Structures and devices built using microspherical building blocks attract significant attention in recent years due to an extraordinary high-quality factor (Q>106) of whispering gallery modes in dielectric microspheres and due to their ability to ...
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Title
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FOURIER-BASED IMAGE SHARPNESS SENSOR FOR ADAPTIVE OPTICS CORRECTION
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Author
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Walker, Kristin
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Date Created
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2009
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Subjects--Topical
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Optics
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Description
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Adaptive optics reduces undesirable turbulence effects present during propagation and imaging through the atmosphere or another random medium. Within an adaptive optics system, wavefront sensing determines the incoming wavefront errors. Image shar...
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Title
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FREEFORM MEASUREMENT WITH STITCHING TALBOT INTERFEROMETER
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Author
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Furukawa, Yasunori
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Date Created
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2018
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Subjects--Topical
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Optics
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Description
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Freeform optics are being used in many fields to realize the outstanding performance due to their high degree of freedom. To realize sufficiently high performance, it is necessary to manufacture the freeform surface with high accuracy, which requi...
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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...
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Title
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INVESTIGATIONS INTO PHOTO-EXCITED STATE DYNAMICS IN COLLOIDAL QUANTUM DOTS
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Author
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Singh, Gaurav
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Date Created
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2015
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Subjects--Topical
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Optics, Nanotechnology
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Description
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Colloidal Quantum dots (QDs) have garnered considerable scientific and technological interest as a promising material for next generation solar cells, photo-detectors, lasers, bright light-emitting diodes (LEDs), and reliable biomarkers. However, ...
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Title
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Improved Fidelity of Triangulation Sensor Measurements in Optical Inspection
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Author
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Hosseinpour, Milad
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Date Created
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2022
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Subjects--Topical
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Mechanical engineering, Optics
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Description
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With the evolution of gear design requirements for new applications, classical gear inspection based on a time-consuming line-oriented tactile measurement must be replaced with a more rapid, areal inspection that can capture complex modern gear mo...
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Title
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Improving Thulium Fiber Laser Lithotripsy Efficiency
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Author
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Hardy, Luke
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Date Created
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2018
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Subjects--Topical
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Optics
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Description
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Kidney stone disease affects approximately 10% of the U.S. population. Conventional Holmium:YAG infrared laser lithotripsy is a standard minimally invasive treatment that operates based on a photothermal interaction with the main chromophore in ti...
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Title
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In Situ Fringe Projection Profilometry for Laser Powder Bed Fusion Process
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Author
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Zhang, Bin
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Date Created
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2017
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Subjects--Topical
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Mechanical engineering, Optics, Engineering
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Description
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Additive manufacturing (AM) offers an industrial solution to produce parts with complex geometries and internal structures that conventional manufacturing techniques cannot produce. However, current metal additive process, particularly the laser p...
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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...
