Transient optics of gold during laser irradiation: From first principles to experiment
Andreas Blumenstein, Eeuwe S. Zijlstra, Dmitry S. Ivanov, Sebastian T. Weber, Tobias Zier, Frederick Kleinwort, B. Rethfeld, J. Ihlemann, P. Šimon, Martı́n E. Garcia
Abstract
The reflectivity of noble metals can dramatically change upon ultrashort laser irradiation due to the heating of $d$ electrons to high temperatures. Knowledge of the resulting transient optics is fundamental for determining and controlling the absorbed energy. In this work, high-accuracy self-reflectivity measurements are performed and interpreted using a theory for the space-resolved and time-resolved energy absorption and dissipation. The combined approach yields the reflectivity of gold in dependence on the incident laser fluence for a wide spectral range.
Topics & Concepts
LaserFluenceIrradiationOpticsMaterials scienceUltrafast laser spectroscopyAbsorption (acoustics)DissipationTransient (computer programming)ReflectivityRange (aeronautics)OptoelectronicsElectronUltrashort pulsePhysicsOperating systemQuantum mechanicsComputer scienceNuclear physicsThermodynamicsComposite materialLaser Material Processing TechniquesLaser-induced spectroscopy and plasmaOcular and Laser Science Research