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Identifier	000399636
Title	Control of ultrafast laser-surface interactions threw polarization and temporal pulse shaping
Alternative Title	Έλεγχος υπερταχέων φαινομενομένων κατά την αλληλεπίδραση λέιζερ -επιφάνειας μέσα από τη χρονική διαμόρφωση και την διαμόρφωση πόλωσης υπερβραχέων παλμών
Author	Φραγγελάκης, Φώτιος
Thesis advisor	Παπάζογλου, Δημήτριος
Reviewer	Λάππας, Αλέξανδρος Λουκάκος, Παναγιώτης
Abstract	In this work we combine temporal pulse shaping and polarization conformation in order to control the ultrafast dynamical process which follows the excitation of a semiconductor surface by ultrashort laser pulses. Excitation of a semiconductor surface and further interference of the incident laser field with the surface wave leads to formation of a Surface Plasmon Polariton. The final product of this interference was found to be the creation of sub-wavelength periodic surface nanostructures, also known as ripples. The aim is to achieve control of the ripple characteristics. It was found that the symmetry, the period and the contrast of the ripples, strongly dependent on the temporal shape and the polarization of the incident laser pulses. Thus, we show that control and tuning of surface nanostructures can be achieved by controlling the ultrafast processes occurring on the semiconductor surface through utilization of non-standard laser-matter interaction methods.
Language	English
Issue date	2016-07-22
Collection	School/Department--School of Sciences and Engineering--Department of Materials Science and Technology--Post-graduate theses
	Type of Work--Post-graduate theses
Permanent Link	https://elocus.lib.uoc.gr//dlib/e/1/8/metadata-dlib-1456303590-249090-18697.tkl
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