Dirk-Mathys, SpangenbergDudley, AngelaNeethling, Pieter H.Rohwer, Erich G.Forbes, Andrew(Optical Society of America, 2014-05)
Spatial light modulators are ubiquitous tools for wavefront control and laser beam shaping but have traditionally been used with monochromatic sources due to the inherent wavelength dependence of the calibration process ...
Kristian Müller-Nedebock’s association with Stellenbosch
began when his parents moved the family here
from his place of birth, Eshowe, in KwaZulu-Natal. With
predilections for libraries, Lego and Latin, his pursuit ...
Rohwer, Christian Matthias(Stellenbosch : Stellenbosch University, 2014-04)
ENGLISH ABSTRACT: In this dissertation we address the conservation of topological states in polymer knots.
Topological constraints are frequently included into theoretical descriptions of polymer
systems through invariants ...
ENGLISH ABSTRACT: The advent of the synthesis or manufacturing of controlled structures on submicron
scales as well as experimental developments enabling the investigation
of physics in speci c biological systems at ...
De Kock, Michiel Burger(Stellenbosch : Stellenbosch University, 2014-04)
ENGLISH ABSTRACT: We investigate the procedure of assigning probabilities to logical statements. The simplest
case is that of equilibrium statistical mechanics and its fundamental assumption of
equally likely states. ...
ENGLISH ABSTRACT: Non-destructive portable X-ray Fluorescence (pXRF) and Particle Induced X-ray
Emission (PIXE) were used to measure the elemental concentration of rock art
fragment paintings. For pXRF the Amptek Silicon ...
ENGLISH ABSTRACT: We present a theoretical approach that allows for the description of trapped Bose-Fermi mixtures
with a tunable interspecies interaction in the vicinity of a Feshbach resonance magnetic field.The
many-body ...
ENGLISH ABSTRACT: The initial charge transfer from dye molecules' excited states to the conduction band of
a semiconductor, after absorption of visible light by the former, is critical to the performance
of Dye sensitized ...
ENGLISH ABSTRACT: The study of α clustering is a well-established topic of research in nuclear physics. Recent
experimental evidence has revealed the first 2+ excitation of the Hoyle state in 12C, which is
known to have ...
Astl, Stefan Ludwig(Stellenbosch : Stellenbosch University, 2013-12)
ENGLISH ABSTRACT:
Techniques for estimating a signal in the presence of noise which contains outliers are currently
not well developed. In this thesis, we consider a constant signal superimposed by a family of
noise ...
ENGLISH ABSTRACT: The following work focuses on the development and characterization of efficient,
high-power, Thulium doped fibre lasers. Lasers emitting light around ~2 μm have
generated a large amount of interest owing ...
ENGLISH ABSTRACT: Low-dimensional materials are known to undergo phase transitions to differently or-
dered states, when cooled to lower temperatures. These phases often show a periodic
modulation of the charge density ...
Elnour, Huzifa Mohammed Ahamed Mohammed(Stellenbosch : Stellenbosch University, 2013-12)
ENGLISH ABSTRACT: A Magneto Optical Trap (MOT) is a configuration formed by three orthogonal pairs of counterpropagating
circularly polarized laser beams and a magnetic field gradient. A MOT is used to
cool, capture and ...
ENGLISH ABSTRACT: An ultra-fast laser pulse can be described in the time or frequency domain. If the timebandwidth
product of an ultra-fast pulse is not satisfied, then the pulse is stretched. Stretching
can be described ...
Collett, Oliver John Philip(Stellenbosch : Stellenbosch University, 2013-03)
This work is a thesis regarding the energy scaling of end-pumped Ho:YLF amplifiers. The work
includes: a brief review of laser physics and models, the development of a suitable three dimensional
time resolved numerical ...
Nortje, Anton Christiaan(Stellenbosch : Stellenbosch University, 2013-03)
ENGLISH ABSTRACT: A tunable narrow-bandwidth vacuum ultra violet laser source was developed
and characterised. Two-photon resonant four-wave sum-frequency mixing of
two pulsed dye laser beams in magnesium vapour was used ...
ENGLISH ABSTRACT: In this thesis I study compact objects described by the Manko-Novikov spacetime. The Manko-
Novikov spacetime is an exact solution to the Einstein Field Equations that allows objects to be
black hole-like, ...
ENGLISH ABSTRACT: In this thesis the structural dynamics, upon photo-excitation, of the charge-densitywave
(CDW) material 4Hb-TaSe2 is investigated on the time-scale of atomic motion
and simultaneously on the spatial-scale ...
Scholtz, F. G.Bartlett, Bruce H.Geyer, H. B.(American Physical Society (APS), 2003-08)
We show that Wegner’s flow equations, as recently discussed in the Lipkin model, can be solved selfconsistently.
This leads to a nonlinear differential equation which fully determines the order parameter
as a function ...