Search results
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Title
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Variable extended depth of field imaging using freeform optics
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Author
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Moein, Sara
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Date Created
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2022
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Subjects--Topical
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Optics
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Description
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Recent advancements in design, manufacturing, and metrology have enabled broader use of freeform components for high-performing optical systems. Freeform optics, which lack rotational symmetry, provide additional design freedoms that can enable co...
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Title
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Thulium Fiber Laser Lithotripsy
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Author
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Blackmon, Richard
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Date Created
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2013
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Subjects--Topical
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Optics, Biomedical engineering
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Description
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The Thulium Fiber Laser (TFL) has been studied as a potential alternative to the conventional Holmium:YAG laser (Ho:YAG) for the treatment of kidney stones. The TFL is more ideally suited for laser lithotripsy because of the higher absorption coef...
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Title
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Symmetry and Constraints in Hydrodynamics and Mechanical Locomotion
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Author
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Fairchild, Michael
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Date Created
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2015
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Subjects--Topical
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Mechanical engineering, Robotics, Mathematics
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Description
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This dissertation introduces new models for the locomotion and control of mechanical and hydrodynamic systems that exhibit symmetry, constraints, and control. I introduce the class of unbalanced Chaplygin control systems and analyze the dynamics a...
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Title
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Specification and Modeling of Mid-Spatial Frequency Errors in Optical Systems
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Author
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DeMars, Luke
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Date Created
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2023
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Subjects--Topical
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Optics
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Description
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Recent advancements in manufacturing and post-processing of optics with sub-aperture methods have enabled greater degrees of freedom to realize complex optical surfaces. Introduction of residual mid-spatial frequency (MSF) surface errors is a cons...
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Title
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SCALABLE HIGH-CAPACITY HIGH-FAN-OUT OPTICAL NETWORKS FOR CONSTRAINED ENVIRONMENTS
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Author
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Syed, Ali
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Date Created
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2012
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Subjects--Topical
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Optics, Communication
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Description
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The investigations carried out as part of the dissertation address the architecture and application of optical access networks pertaining to high-capacity and high fan-out applications such as in-flight entertainment (IFE) and video-gaming environ...
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Title
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Optical surface characterization with the structure function
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Author
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He, Liangyu
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Date Created
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2013
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Subjects--Topical
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Mechanical engineering, Optics
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Description
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It is important to characterize surface and transmitted wavefront errors in terms of the spatial content. The errors are typically analyzed in three spatial domains: figure, ripple (or mid-spatial frequency) and roughness. These errors can affect ...
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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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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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ENHANCED THERMALLY MANAGED PACKAGING OF III-NITRIDE LIGHT EMITTERS
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Author
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Kudsieh, Nicolas
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Date Created
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2014
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Subjects--Topical
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Physics
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Description
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In this Dissertation our work on `enhanced thermally managed packaging of high power semiconductor light sources for solid state lighting (SSL)' is presented. The motivation of this research and development is to design thermally high stable cost-...
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Title
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Characterization of Broadband Optical Functionality of Freeform Optics
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Author
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Koerber, Jonathan
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Date Created
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2022
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Subjects--Topical
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Optics
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Description
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Freeform optics, broadly described as optical elements with at least one surface lacking translational or rotational symmetry, have seen increased interest due to recent advances in optical design, fabrication, and measurement. Freeform optics pro...
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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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Areal gear metrology with modified flanks
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Author
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Ni, Kang
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Date Created
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2017
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Subjects--Topical
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Mechanical engineering
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Description
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Gears are critical mechanical components in power transmission systems, used across a board spectrum of industries such as automobile, aerospace and renewable energy. Given the advancement of design and manufacture of gears in the past decades, th...
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Title
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ABSOLUTE DISTANCE (THICKNESS) METROLOGY USING WAVELENGTH SCANNING INTERFEROMETRY
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Author
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Suratkar, Amit
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Date Created
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2009
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Subjects--Topical
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Optics, Optical engineering, Metrology
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Description
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Wavelength scanning interferometry offers a new dimension in precision metrology by measuring the cavity length (thickness), the cavity length variation over the cavity area (flatness), and the optical homogeneity within a transparent cavity; with...
