This thesis reports experimental indirect spectral transfer of shaped pulses from the near to mid-infrared via the use of an optical parametric oscillator. It was shown that good spectral fidelity of transfer can be achieved by making suitable adjustments to the OPO. The issues …
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The aim of this thesis is to investigate the influence of ultraviolet laser light on single crystal lithium niobate surfaces with a focus on useful functionalisation. The investigations split naturally into three areas: effects on hydrophilicity by low intensity laser irradiatio…
This thesis reports on the progress made towards the integration of fibre optics components for the atom chip, a device developed to manipulate matter on the atomic scale for the purpose of quantum information processing, novel applications, and fundamental research. Following i…
This thesis describes the research carried out by the author on the exploitation of acoustic emissions detected during extracorporeal shockwave lithotripsy (a non-invasive procedure for the treatment of urinary stones) to develop a new diagnostic system. The work formed part of …
The torsion balance is one of the key pieces of apparatus used in experimental searches for weak forces. In the search for an understanding of a Unified Theory, physicists have suggested a number of signatures that are detectable in laboratory measurements. This thesis describes…
The known population of high-mass X-ray binaries in the Small Magellanic Cloud is continually growing and is now a similar size to that of the Milky Way, despite a significant mass difference between the two galaxies. In this thesis, I present multi-wavelength observations of Be…
By their nature, scanning probe microscopy (SPM) measurements are ideally suited to the study of organic thin-film transistors (TFTs). In Chapter 3 surface potential measurements are made on TFTs made from the polymer pBTTT. The modification of the surface morphology by annealin…
Optical fibre sensors have offered such unrivalled distributed sensing features that they continue to be successfully exploited in various industries for performing continuous measurements of the physical parameters, such as, temperature and strain. However, there arise certain …
Phase sensitive amplification (PSA) is a remarkably powerful tool if implemented correctly - it allows amplification with a noise figure lower than quantum mechanics normally dictates, and also allows the development of systems that coherently process the phase of their optical …
In this work physics-based modelling of bluff-body noise was performed with application to landing gear noise production. The landing gear is a primary contributor to airframe noise during approach. Noise is primarily generated from the unsteady pressures resulting from the turb…
This thesis covers two areas of laser physics: optical cooling of rare-earth-doped solids by anti-Stokes fluorescence and the generation of pure Laguerre-Gaussian laser modes using a ring-shaped pump beam. A novel laser-based approach to determining local variations in the tempe…
This thesis presents experimental investigations of the electron spin dynamics (i.e. the spin relaxation rate, This thesis presents experimental investigations of the electron spin dynamics(i.e. the spin relaxation rate, Γs, and the g-factor, g ∗ ) inGaAs/ AlGaAs based semicondu…
The general aim of this thesis is to investigate the suitability of a stochastic method for computational aeroacoustics, the specific objective being to devise a stochastic method to generate synthetic turbulence and combine it with the linearised Euler equations to predict broa…
The first observation of the decay mode B0 -> D0K+K- is presented using 0.62 fb-1 of data collected by the LHCb detector in 2011. The branching fraction is measured with respect to the topologically similar decay mode, B0 -> D0π+π-. The ratio of branching fractions is measured t…
Structural characterisation in the solid state is an important step in understanding the physical and chemical properties of a material. In pharmaceuticals, an active pharmaceutical ingredient (API) may be medicinally favourable, but have undesirable physical properties, such as…
An introduction to surface structure and plane wave density functional theory (DFT) is presented along with theoretical studies of seven adsorbate systems. A new energetically favourable structure of low symmetry is found for furan on Pd(111) that is entirely consistent with pre…
The utility of the little used Field Sweep Fourier transform (FSFT) method is demonstrated for recording wideline nuclear magnetic resonance (NMR) of 195Pt resonances for various sized platinum nanoparticles, as well as platinum-tin bimetallics used in fuel cell catalysts, and v…