Browsing Physics and Astronomy by Subject "Physics & Astronomy"
Now showing items 1-20 of 22
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Characterisation and Optimization of Ultrashort Laser Pulses
(University of Waterloo, 2003)The ultrafast optical regime is defined, as it applies to laser pulses, along with a brief introduction to pulse generation and characterisation technologies. A more extensive description of our particular amplified ... -
Development and Characterization of a Regeneratively Amplified Ultrafast Laser System with an All-Glass Stretcher and Compressor
(University of Waterloo, 2006)High-peak power laser systems are defined along with a brief introduction of the technology used in their development and application to the project. A review of concepts surrounding optical pulses, focusing on the ... -
The Development of an Average, Anatomically Based, Young Adult, GRIN Eye Model
(University of Waterloo, 2005)The purpose of this thesis is to describe the development of an anatomically based, young adult eye model, which includes a crystalline lens with a gradient refractive index (GRIN). This model will then be used to ... -
Electrostatics of the Binding and Bending of Lipid Bilayers: Charge-Correlation Forces and Preferred Curvatures
(University of Waterloo, 2004)Lipid bilayers are key components of biomembranes; they are self-assembled two-dimensional structures, primarily serving as barriers to the leakage of cell's contents. Lipid bilayers are typically charged in aqueous ... -
Fast Stochastic Global Optimization Methods and Their Applications to Cluster Crystallization and Protein Folding
(University of Waterloo, 2005)Two global optimization methods are proposed in this thesis. They are the multicanonical basin hopping (MUBH) method and the basin paving (BP) method. <br /><br /> The MUBH method combines the basin hopping (BH) ... -
Field-Free Alignment and Strong Field Control of Molecular Rotors
(University of Waterloo, 2004)Methods of controlling molecular rotations using linearly polarized femtosecond and picosecond pulses are considered and analyzed theoretically. These laser pulses, typically in the infrared, are highly non-resonant ... -
HIGH RESOLUTION MICROWAVE SPECTROSCOPY OF ULTRA COLD RYDBERG ATOMS AS A PROBE OF ELECTRIC AND MAGNETIC FIELDS
(University of Waterloo, 2003)In highly excited Rydberg atoms, the excited electron is in a large, loosely bound orbit. Hence, in contrast with the ground states, the Rydberg states are very sensitive to external electric field and can be ionized in ... -
Higher dimensional Taub-NUT spaces and applications
(University of Waterloo, 2006)In the first part of this thesis we discuss classes of new exact NUT-charged solutions in four dimensions and higher, while in the remainder of the thesis we make a study of their properties and their possible applications. ... -
Instabilities in Higher-Dimensional Theories of Gravity
(University of Waterloo, 2006)A number of models of nature incorporate dimensions beyond our observed four. In this thesis we examine some examples and consequences of classical instabilities that emerge in the higher-dimensional theories of gravity ... -
Interactions of Cationic Peptides and Ions with Negatively Charged Lipid Bilayers
(University of Waterloo, 2006)In this thesis we study the interactions of ions and cationic peptides with a negatively charged lipid bilayer in an ionic solution where the electrostatic interactions are screened. <br /><br /> We first examine the ... -
Minimal model for the secondary structures and conformational conversions in proteins
(University of Waterloo, 2005)Better understanding of protein folding process can provide physical insights on the function of proteins and makes it possible to benefit from genetic information accumulated so far. Protein folding process normally ... -
Modelling Quantum Well Lasers
(University of Waterloo, 2002)In this thesis, two methods to model quantum well lasers will be examined. The first model is based on well-known techniques to determine some of the spectral and dynamical properties of the laser. For the spectral ... -
Monte Carlo Study of the Magnetic Flux Lattice Fluctuations in High-<em>T<sub>c</sub></em> Superconductors
(University of Waterloo, 2005)By allowing to measure the magnetic field distribution inside a material, muon spin rotation experiments have the potential to provide valuable information about microscopic properties of high-temperature superconductors. ... -
Multifrequency Raman Generation in the Transient Regime
(University of Waterloo, 2006)Two colour pumping was used to investigate the short-pulse technique of Multifrequency Raman Generation (MRG) in the transient regime of Raman scattering. In the course of this study we have demonstrated the ability to ... -
Nematic ordering of wormlike polymers
(University of Waterloo, 2005)In this thesis, based on the Onsager excluded volume interaction model, two nematic ordering problems of wormlike (semiflexible) polymer are studied: one is to investigate the isotropic-nematic interface of polymers for ... -
Observation of Resonant Electric Dipole-Dipole Interactions Between Cold Rydberg Atoms Using Microwave Spectroscopy
(University of Waterloo, 2006)This thesis reports the first observation of the resonant electric dipole-dipole interaction between cold Rydberg atoms using microwave spectroscopy, the observation of the magnetic field suppression of resonant interactions, ... -
Physics in Higher-Dimensional Manifolds
(University of Waterloo, 2003)In this thesis, we study various aspects of physics in higher-dimensional manifolds involving a single extra dimension. After giving some historical perspective on the motivation for studying higher-dimensional theories ... -
A Quasilocal Hamiltonian for Gravity with Classical and Quantum Applications
(University of Waterloo, 2000)I modify the quasilocal energy formalism of Brown and York into a purely Hamiltonian form. As part of the reformulation, I remove their restriction that the time evolution of the boundary of the spacetime be orthogonal ... -
Specific Heat of the Dilute, Dipolar-Coupled, Ising Magnet LiHo<sub><em>x</em></sub>Y<sub>1-<em>x</em></sub>F<sub>4</sub>
(University of Waterloo, 2006)The system LiHo<sub><em>x</em></sub>Y<sub>1-<em>x</em></sub>F<sub>4</sub> is a nearly perfect example of a dilute, dipolar-coupled Ising magnet and, as such, it is an ideal testing ground for many theories in statistical ... -
Spectroscopy of selected metal-containing diatomic molecules
(University of Waterloo, 2005)Fourier transform infrared emission spectra of MnH and MnD were observed in the ground <em>X</em><sup>7</sup>σ<sup>+</sup> electronic state. The vibration-rotation bands from <em>v</em> = 1 to 0 to <em>v</em> = ...