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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

  • Light Transmittance Properties of Biological Tissues of the Red-sided Garter Snake, Thamnophis sirtalis parietalis, Between 450 and 850 Nanometers

    Creator:
    Bixby, Eric M.
    Abstract:
    Using a spectrometer and photomultiplier tube, I measured the electromagnetic radiation transmittance properties of three types of tissue-- ventral skin, cardiac muscle, and liver tissue--in the red-sided garter snake Thamnophis sirtalis parietalis between the wavelengths of 450 and 850 nanometers (nm). Control readings were taken using a 10⁻² neutral density...
    Resource Type:
    Honors College Thesis
    Full Text:
    sirtalis parietalis, Between 450 and 850 Nanometers. Abstract approved: Dr. David H. Mcintyre Using

  • 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

  • Measurement of optical bandgap energies of semiconductors

    Creator:
    Russell, Joshua A.
    Abstract:
    A method for bandgap energy determination using di use re ection is presented and compared to the traditional integrating sphere method. We have found the bandgap energies of ZnO, TiO₂, Cu₂O, Si, SnZrS₃, SnZrSe₃, Sn₂S₃, and BiCuOSe powders with both methods and found they agree within 0.03 eV. We have...
    Resource Type:
    Masters Thesis
    Full Text:
    Energies of Semiconductors Abstract approved: David H. McIntyre A method for bandgap energy

  • Applied Computing Techniques for Holographic Optical Tweezers

    Creator:
    Gruss, Daniel
    Abstract:
    Optical tweezers are capable of trapping micron sized particles through the transfer of the momentum of light. These capabilities are expanded through the use of computer controlled holograms for beam shaping. This hologram creation is facilitated through the use of a spatial light modulator, which is a liquid crystal device...
    Resource Type:
    Honors College Thesis
    Full Text:
    : _____________________________________________________ David McIntyre Optical tweezers are capable of trapping micron sized particles

  • Ecology of populations of Van Dyke's salamanders in the Cascade Range of Washington State

    Creator:
    McIntyre, Aimee P.
    Abstract:
    The Van Dyke's salamander (Plethodon vandyke,) is a rare species endemic to Washington State. It has been found in cool moist microhabitats along streams, splash zones of waterfalls, and headwater seeps. We explored the association of the Van Dyke's salamander with hydrologic condition, geomorphology, disturbance characteristics, and vegetation structure in...
    Resource Type:
    Masters Thesis
    Full Text:
    AN ABSTRACT OF THE THESIS OF Aimee P. McIntyre for the degree

  • Anti-Reflective Films: Spectroscopy and Ellipsometry of Porous Films

    Creator:
    Ramm, Joshua J.
    Abstract:
    The relationship between the index of refraction and the porosity of a material is that the index decreases with respect to the porosity. This property can be used to change the index of refraction of films which allows control of the reflection of the material. This is important because being...
    Resource Type:
    Undergraduate Thesis
    Full Text:
    : Spectroscopy and Ellipsometry of Porous Films by Josh Ramm Advisor: Dr. David McIntyre

  • Optical Characterization of Transparent Conductive Thin Films

    Creator:
    Tucker, Derek A.
    Abstract:
    The optical characterization of transparent conductive thin films is demonstrated. The basics of transparency and conductivity, as they relate to transparent conductor research, are explained. A functional model of the reflectance and transmittance of a sample film, including interference fringes, is derived from the Fresnel electric field amplitude coefficients. The...
    Resource Type:
    Honors College Thesis
    Full Text:
    providing professional and academic advice. • Dr. David Mcintyre, Thesis advisor - For always providing

  • Time-Dependent Crack Growth Mechanisms in Alloy 617 at 800°C in Air

    Creator:
    Addison, Dylan, A.
    Abstract:
    Time-dependent crack growth mechanisms in Alloy 617 at 800°C in air were studied using compact tension samples machined in the L-T direction, cracked at temperature using an induction furnace and servo-hydraulic load frame. The application of different loading waveforms, including triangular, hold time, and sustained loading, were studied with relation...
    Resource Type:
    Masters Thesis
    Full Text:
    : ______________________________________________________ Jamie J. Kruzic Julie D. Tucker Time-dependent crack growth

  • The effect of transverse shifts on the LIGO interferometer (simulation study)

    Creator:
    Fettig, Doug J.
    Abstract:
    The LIGO interferometers have reached their designed sensitivity level which is greater than any other interferometer ever built. At this point, it is important to have a proper understanding of small perturbations that might still exist (until now these issues did not come to the forefront because other more critical...
    Resource Type:
    Honors College Thesis
    Full Text:
    Interferometer. Abstract approved: ____________________________________________ David McIntyre The LIGO