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Filtering by: Advisor Milne, David H. Remove constraint Advisor: Milne, David H. Degree Field Physics Remove constraint Degree Field: Physics

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  • Aberration Correction of Optical Wavefronts with Sequential, Genetic, and Deep Learning Algorithms

    Creator:
    Weller, Jesse A.
    Abstract:
    In this work, we systematically explore the effectiveness of optical aberration correction over a wide range of optical depths using the Segmented and Zernike Polynomial bases. We manufacture a set of 16 optical phantom samples consisting of a clear polyester resin substrate embedded with varying concentrations of aluminum oxide (Al₂O₃)...
    Resource Type:
    Masters Thesis
    Full Text:
    Wavefronts with Sequential, Genetic, and Deep Learning Algorithms Abstract approved: David H. McIntyre In

  • Exploiting Diffraction Orders from a Phase Limited SLM to Remove and Model Zernike Aberrations

    Creator:
    Goschie, Aaron J.
    Abstract:
    Using a plastic bottle, we explore the capabilities of a reflective phase-only Spatial Light Modulator (SLM) in removing wavefront aberrations using a Zernike polynomial phase mask, with the modulators phase depth limited to 0.8π radians. Wavefront aberrations, which can be modeled with Zernike polynomials, distort image transmission through various optical...
    Resource Type:
    Undergraduate Thesis
    Full Text:
    David H. McIntyre submitted to the Department of Physics, Oregon State University in partial

  • Fourier Analysis of Smartphone Call Quality

    Creator:
    Dempsey, Zackery E.
    Abstract:
    In recent decades, the cell phone has provided a convenient form of long-distance communi-cation to the general public. Despite the technological improvements since, cell phones and their smartphone successors have suffered from a lack of clarity over a typical voice call, a result of their limited bandwidth. New phone services,...
    Resource Type:
    Undergraduate Thesis
    Full Text:
    Fourier Analysis of Smartphone Call Quality Zackery Dempsey Advisor: David McIntyre Oregon State

  • Applications of Holographic Optical Tweezers: Multiplexed Fluorescence Spectroscopy and the Micromechanics of Type-I Collagen

    Creator:
    Cibula, Matthew A.
    Abstract:
    The development and some applications of holographic optical tweezers (HOT) are presented. Our HOT system uses a spatial light modulator (SLM) to control the location and properties of the optical trap. We have developed a method for optimizing the diffraction efficiency of a SLM that can be applied in situ...
    Resource Type:
    Dissertation
    Full Text:
    Type-I Collagen Abstract approved: David H. McIntyre The development and some applications of

  • Bandgap measurements of nonspecular materials using a bifurcated fiber optic method of diffuse reflectance

    Creator:
    Wells, Blake
    Abstract:
    A method for determining bandgap energy using diffuse reflection is presented. The method uses bifurcated fiber optic cables to measure the diffuse reflection of diffusely reflective materials. The absorption spectrum is extrapolated from the diffuse reflection spectrum and used to determine the bandgap of powdered materials. The theory of nonspecular...
    Resource Type:
    Undergraduate Thesis
    Full Text:
    Blake Wells Oregon State University Department of Physics Advisor: Dr. David McIntyre 2015

  • A magneto-optic trap for rubidium

    Creator:
    Delfs, Holger
    Resource Type:
    Masters Thesis
    Full Text:
    Title: A MagnetoOptic Trap for Rubidium Redacted for Privacy Abstract approved: David H. McIntyre

  • Optically stabilized diode laser using high-contrast saturated absorption

    Creator:
    Cuneo, Christopher J.
    Abstract:
    Doppler-free saturation spectroscopy in an optically thick atomic vapor is used in an optical-feedback configuration for two semiconductor diode laser systems. One laser system consists of an unmodifed, commercially available diode laser. The other laser system consists of a diode laser initially stabilized by optical feedback from a diffraction grating....
    Resource Type:
    Masters Thesis
    Full Text:
    Saturated Absorption . Abstract approved: David H. McIntyre Doppler-free saturation spectroscopy in an

  • A rubidium atomic funnel

    Creator:
    Swanson, Thomas B.
    Abstract:
    A low velocity, low temperature beam of atoms is produced from a two-dimensional magneto-optic trap known as an atomic funnel. The funnel provides simultaneous spatial and velocity compression of atoms and will provide a source for a three-grating atomic interferometer. Rubidium atoms from an oven are slowed by chirped cooling...
    Resource Type:
    Dissertation
    Full Text:
    : A Rubidium Atomic Funnel. Abstract Approved: David H. McIntyre A low velocity, low temperature

  • Laser cooling and trapping with electronically stabilized grating-feedback diode lasers

    Creator:
    Silva, Nancy J.
    Abstract:
    We have developed simple and inexpensive laser systems using grating-feedback diode lasers with electronic feedback to the injection current. These grating-feedback lasers can be continuously scanned up to 10 GHz and have a linewidth of 150 kHz. The three electronic frequency-stabilization systems we developed use polarization spectroscopy, etalon transmission and...
    Resource Type:
    Dissertation
    Full Text:
    Stabilized Grating-Feedback Diode Lasers. Abstract Approved: David H. McIntyre We have developed simple

  • Low-velocity matter wave source for atom interferometry produced by Zeeman-tuned laser cooling and magneto-optic trapping

    Creator:
    Mayer, Shannon K.
    Abstract:
    A continuous, low-velocity, nearly monochromatic atomic beam is created using laser cooling and two-dimensional magneto-optic trapping. Rubidium atoms from an effusive oven are slowed and cooled using Zeeman-tuned slowing. The scattering force from a counter-propagating, frequency-stabilized diode laser beam is used to decelerate the thermal beam of atoms to a...
    Resource Type:
    Dissertation
    Full Text:
    Magneto-Optic Trapping. Abstract Approved: David H. McIntyre A continuous, low-velocity, nearly