Search results
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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...
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Title
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COMPRESSIVE IMAGING AND DUAL MOIRÉ LASER INTERFEROMETER AS METROLOGY TOOLS
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Author
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Abolbashari, Mehrdad
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Date Created
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2013
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Subjects--Topical
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Optics, Engineering
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Description
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Metrology is the science of measurement and deals with measuring different physical aspects of objects. In this research the focus has been on two basic problems that metrologists encounter. The first problem is the trade-off between the range of ...
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Title
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Complex photonic crystals for broadband "all-angle" self-collimation
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Author
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Chuang, Yi-Chen
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Date Created
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2010
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Subjects--Topical
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Optics
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Description
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Self-collimation is a dispersion property of many photonic crystals (PCs), in which light beam can propagate free of divergence in the PCs. While self-collimation is a desired property for applications related to wave guiding and light collection,...
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Title
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Design, Fabrication and Testing of Hierarchical Micro-optical Structures and Systems
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Author
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Cannistra, Aaron
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Date Created
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2011
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Subjects--Topical
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Optics
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Description
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Micro-optical systems are becoming essential components in imaging, sensing, communications, computing, and other applications. Optically based designs are replacing electronic, chemical and mechanical systems for a variety of reasons, including l...
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Title
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EXTERNAL WAVELENGTH STABILIZATION OF GRATING COUPLED SURFACE EMITTING LASERS AND APPLICATIONS
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Author
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Yilmaz, Yigit
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Date Created
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2012
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Subjects--Topical
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Electrical engineering, Optics, Electromagnetism
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Description
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In this dissertation, we explore a semiconductor optical device configuration based on non-resonant diffraction grating coupler. These devices are coupled with monolithic and external wavelength selection elements to form the resonant cavity lasin...
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Title
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Effects of Edge Roughness on Optical Scattering from Periodic Microstructures
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Author
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Bergner, Brent
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Date Created
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2009
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Subjects--Topical
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Optics, Nanotechnology
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Description
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Planar photonic crystals and other microstructured surfaces have important applications in a number of emerging technologies. However, these structures can be difficult to fabricate in a consistent manner. Rapid, precise measurements of critical p...
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Title
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Electromagnetic Wave Phenomena In Periodic Metastructures
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Author
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Schenk, John
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Date Created
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2010
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Subjects--Topical
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Electrical engineering, Optics, System theory
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Description
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There is an active effort toward the development of negative index metamaterials for application in high-resolution imaging. In particular, engineering an artificial material exhibiting an index of exactly -1, may permit sub-wavelength imaging. Th...
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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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Noninvasive Laser Vasectomy
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Author
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Cilip, Christopher
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Date Created
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2012
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Subjects--Topical
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Optics, Engineering, Biomedical engineering
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Description
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Development of a noninvasive vasectomy technique may eliminate male fear of complications (incision, bleeding, infection, and scrotal pain) and result in a more popular procedure. These studies build off previous studies that report the ability to...
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Title
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Novel Fiber Optic Tip Designs and Devices For Laser Surgery
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Author
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Hutchens, Thomas
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Date Created
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2013
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Subjects--Topical
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Optics
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Description
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Fiber optic delivery of laser energy has been used for years in various types of surgical procedures in the human body. Optical energy provides several benefits over electrical or mechanical surgery, including the ability to selectively target spe...
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Title
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Optical Stimulation of the Prostate Nerves: A Potential Diagnostic Technique
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Author
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Tozburun, Serhat
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Date Created
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2012
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Subjects--Topical
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Optics
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Description
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There is wide variability in sexual potency rates (9 - 86%) after nerve-sparing prostate cancer surgery due to limited knowledge of the location of the cavernous nerves (CN's) on the prostate surface, which are responsible for erectile function. T...
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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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PHASE STRUCTURED WAVEFIELDS WITH PHASE SINGULARITIES AND BISPECTRAL PROPERTIES
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Author
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Scipioni, Marco
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Date Created
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2010
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Subjects--Topical
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Optics
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Description
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The work presented in this dissertation can be subdivided into two parts. The first part illustrates the novel use of a 37 actuator segmented deformable mirror for the creation of optical vortex beams ranging in topological charge from 1 to 10. Th...
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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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SIGNAL PROCESSING BASED METHOD FOR SOLVING INVERSE SCATTERING PROBLEMS
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Author
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Shahid, Umer
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Date Created
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2010
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Subjects--Topical
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Optics, Biomedical engineering, Remote sensing
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Description
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The problem of reconstructing an image of the permittivity distribution inside a penetrable and strongly scattering object from a finite number of noisy scattered field measurements has always been very challenging because it is ill-posed in natur...
