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Dissertation Gold Surface Nanostructuring with Ultrashort Laser Pulses - Study of Non-equilibrium Effects 

Blumenstein, Andreas Harald (2019)
Laser material interaction and structure formation in metals under controlled ultrashort laser pulse conditions are discussed in this work. A novel approach is presented describing the exact amount of energy deposited by a laser pulse in a gold surface, applicable under a variety of structuring conditions. The presented model is validated by a new introduced broad-band pump-probe reflectivity measurement method. A technique also applicable to investigate other phenomenas where 20 fs resolution combined with an octave ...
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Dissertation Ab-initio analysis of the structural response of solids after femtosecond-laser-pulse excitation 

Zier, Tobias (2019)
After an intense femtosecond-laser excitation extreme non-equilibrium conditions are induced in materials. The high photon density in such an ultrashort-laser pulse interacts directly with the electronic system of the material. By absorbing the photon energy the electrons are excited in high energy states, where they form a non-equilibrium distribution shortly after the excitation. Due to fast electron-electron scattering and cascading processes equilibrates the electronic system within several femtoseconds to a ...

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    2019 (2)
  • Publication typeDoctoral thesis  (2)
  • Keyword (DDC)530  Physics  (2)
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