Browsing Physics and Astronomy by Title
Now showing items 736-755 of 768
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Two-Color Chirped-Pulse Amplification Fiber Amplifier, for Mid-Infrared Generation
(University of Waterloo, 2010-01-22)The goal of this thesis is developing a two-color Ytterbium (Yb) fiber amplifier system that can be used for generation of mid-infrared radiation. Previously, our group reported generating 20 µW of average power, at a ... -
Two-Color Ultrafast Yb:Fiber Chirped Pulse Amplifier for Mid-Infrared Generation and Sensitive Mid-Infrared Detector Based on Extreme Non-Degenerate Two Photon Absorption in GaAs
(University of Waterloo, 2014-09-12)This thesis outlines the development and optimization of a two-color three-stage ultrafast Yb:fiber chirped pulse amplifier for the generation of mid-infrared (MIR) radiation and a novel sensitive mid-infrared detector by ... -
Two-Colour Nonlinear Amplification for Mid-infrared Generation by Difference Frequency Generation
(University of Waterloo, 2024-01-16)In this thesis, I discuss the development of a two-colour laser system which uses an all-normal dispersion fiber laser in combination with a gain-managed nonlinear amplifier as its broadband source. The goal is to develop ... -
Ultra Low Dissipation Silicon Nanowire Resonator Arrays for Scanning Probe Applications
(University of Waterloo, 2020-01-23)This work describes the fabrication and characterization of silicon nanowire oscillators for use in ultra-high sensitivity force detection. These structures are optimized for use as scanning probes by fabricating ... -
Ultra-Cold CsLi Molecules as a Platform for Quantum Information Processing
(University of Waterloo, 2022-12-19)Despite their proposal 40 years ago, quantum computers are still in their infancy, with a panoply of various systems demonstrated as potential methods of quantum information processing. Rydberg atoms are a leading platform, ... -
Ultra-low temperature dilatometry
(University of Waterloo, 2010-10-28)This thesis presents research of two novel magnetic materials, LiHoF4 and Tb2Ti2O7. Experiments were performed at low temperatures and in an applied magnetic field to study thermal expansion and magnetostriction using a ... -
Ultrafast coincidence characteristics of entangled photons towards entangled two-photon absorption
(University of Waterloo, 2014-01-28)Nonlinear optics has had extensive application into a vast array of scientific fields. One such nonlinear process, two-photon absorption (TPA), has had a wildly successful adoption into the field of biological imaging and ... -
Ultrafast Imaging of Molecular Processes in Small Molecules Using Coulomb Explosion Imaging
(University of Waterloo, 2017-09-27)Molecular structure and dynamics of three molecules (carbonyl sulfide, acetylene, and ethylene) are examined using various implementations of the Coulomb Explosion Imaging technique. Soft x-rays from the Canadian Light ... -
Ultrafast manipulation of single photons using dispersion and sum-frequency generation
(University of Waterloo, 2016-12-01)Single photons provide a natural platform for quantum communication and quantum networking, as they can be entangled in many degrees of freedom and maintain coherence over long-distance links. However, while their minimal ... -
Ultrafast Metrology in the Quantum Domain
(University of Waterloo, 2019-02-15)Single photons are a natural platform for quantum technologies as they support entanglement in many degrees of freedom and are inherently well protected from a detrimental type of noise called decoherence. In order to ... -
An Ultrafast Source of Polarization Entangled Photon Pairs based on a Sagnac Interferometer
(University of Waterloo, 2009-01-26)This thesis describes the design, development, and implementation of a pulsed source of polarization-entangled photons using spontaneous parametric down-conversion in a Sagnac interferometer. A tangle of 0.9286 ± 0.0015, ... -
Ultrahigh Resolution Optical Coherence Tomography for Non-invasive Imaging of Outer Retina Degeneration in Rat Retina
(University of Waterloo, 2013-02-22)This project initiated with the aim for improving the ultrahigh resolution optical coherence tomography (UHR-OCT) system performance by considering the limitations to the axial OCT resolution for in vivo imaging of human ... -
Ultraviolet Sizes and Morphology of Galaxies in the Coma Cluster
(University of Waterloo, 2022-08-25)We present a study of the Coma cluster using ultraviolet (UV) imaging obtained using the Ultraviolet Imaging Telescope. We discuss methods for measuring sizes and morphology of galaxies in the UV. Several cluster galaxies ... -
Understanding Polarization Distortions for Real-world Quantum Key Distribution
(University of Waterloo, 2020-05-15)The field of quantum key distribution (QKD) has seen many advancements since its conception in 1984. Recently there have been developments towards establishing free space optical links between satellites and earth to enable ... -
Understanding sequential measurements in psi-epistemic ontological models
(University of Waterloo, 2019-08-06)Since the famous debates of Einstein & Bohr, physicists have argued about the nature of the quantum state. Is it best thought of as describing the-way-things-are out there in the world, or merely as a description of our ... -
Unifying Thermal Big Bang and Black Holes
(University of Waterloo, 2020-09-30)Theories that stand the test of constant bombardment of new (and old) ideas, observations and unexplained phenomena are hard to come by. Despite countless attempts over many years of trying, cosmology and gravitational ... -
Universal Control in 1e-2n Spin System Utilizing Anisotropic Hyperfine Interactions
(University of Waterloo, 2010-09-30)ESR quantum computing presents faster means to perform gates on nuclear spins than the traditional NMR methods. This means ESR is a test-bed that can potentially be useful in ways that are not possible with NMR. The first ... -
Universal formula for the holographic speed of sound
(Elsevier, 2018-06-10)We consider planar hairy black holes in five dimensions with a real scalar field in the Breitenlohner–Freedman window and derive a universal formula for the holographic speed of sound for any mixed boundary conditions of ... -
The Unruh-DeWitt Detector Model: Modified Dispersion and Nonlinear Couplings
(University of Waterloo, 2021-09-30)In this work, we employ the Unruh-DeWitt (UDW) detector model to various ends. We present applications of this relativistic detector model to quantum optics, including decoherence in optical cavities and non-linear quantum ... -
Unruh-DeWitt detector response along static and circular-geodesic trajectories for Schwarzschild-AdS black holes
(University of Waterloo, 2014-08-26)We present novel methods to numerically address the problem of characterizing the response of particle detectors in curved spacetimes. These methods allow for the integration of the Wightman function, at least in principle, ...