Dynamics of ultra-short laser pulse interaction with solids at the origin of nanoscale surface modification [Elektronische Ressource] / vorgelegt von Florenţa Adriana Costache

Dynamics of Ultra-short Laser Pulse Interaction with Solids at the Origin of Nanoscale Surface Modification Von der Fakultät für Mathematik, Naturwissenschaften und Informatik der Brandenburgischen Technischen Universität Cottbus zur Erlangung des akademischen Grades Doktor der Naturwissenschaften (Dr. rer. nat.) genehmigte Dissertation vorgelegt von Dipl.- Phys. Floren ţa Adriana Costache geboren am 16.11.1971 in Berca, Rumänien Cottbus 2006 Gutachter Prof. Dr. Jürgen Reif Prof. Dr. Wolfgang Kautek Gutachter Dr. Philippe Martin Datum der Einreichung: 12.12.2006 Datum der mündlichen Prüfung: 30.03.2007 ABSTRACT This thesis addresses fundamental physical processes which take place at the surface region of a target during and after the interaction with ultra-short laser pulses. The general goal is to bring together different phenomena and discuss the non-equilibrium nature of the interaction of femtosecond laser pulses (τ < 100 fs) with various materials, in particular pdielectrics and semiconductors. Different experiments, using various techniques, are designed to explore the basic mechanisms of laser ionization, defect creation, electron-lattice energetic transfer, charged particles desorption, optical breakdown, phase transformations and surface morphological changes.