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Identifier |
000443214 |
Title |
Design and engineering of structured light tailored for materials science applications |
Alternative Title |
Σχεδιασμός και υλοποίηση διαμορφωμένου φωτός προσαρμοσμένου για εφαρμογές στην επιστήμη των υλικών |
Author
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Μανσούρ, Δημήτριος
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Thesis advisor
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Παπάζογλου, Δημήτριος
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Reviewer
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Τζωρτζάκης, Στέλιος
Καφεσάκη, Μαρία
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Abstract |
The generation of custom light fields, often described as structured light, is a
topic of wide interest in optics. Structured light provides a significant advantage
compared to non-structured light, by enabling us to control the intensity
distribution and the focus position in both linear and non-linear propagation
regimes. Such a control is challenging for high-power beams, since as one increases
the beam’s optical power, nonlinear effects inevitably take place and
as a result the beam’s spatial structure is dynamically altered. Although a
plethora of structured optical beams have been introduced to address this
problem, their generation is not trivial. Their complexity challenges our
current state of the art techniques for light structuring and has urged us
to exploit, among others, unconventional approaches like the use of optical
aberrations or spatial multiplexing.
This thesis is focused on theoretical and experimental design techniques
for materializing structured optical wave packets, with higher efficiency and
power and at broad spectral range, tailored for materials science applications.
These novel techniques include among others the use of reflecting
optics as broadband continuous phase masks, which allowed us to experimentally
study the effect of spatiotemporal coherence on the propagation of
accelerating wave packets and to generate curved plasma channels for THz
generation in air. Likewise, using rotationally symmetric accelerating beams
as a template, we introduce a toolbox of versatile light scalpels, and demonstrate
the generation of Tornado waves, an exciting new type of spiralling
light that combines radial and angular acceleration with a precisely tuned
focal distribution.
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Language |
English |
Subject |
Wave optics |
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Διαμόρφωση φωτός |
Issue date |
2021-11-26 |
Collection
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School/Department--School of Sciences and Engineering--Department of Materials Science and Technology--Doctoral theses
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Type of Work--Doctoral theses
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Permanent Link |
https://elocus.lib.uoc.gr//dlib/b/7/9/metadata-dlib-1635496806-241201-5134.tkl
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Views |
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