Speaker
Sergiu Amarie
(Max Planck Institute of Quantum Optics)
Description
S. Amarie(1), I. Ivanov(1), V. Pervak(2), F. Keilmann(1) and A. Apolonskiy(1,2)
1) Max Planck Institute of Quantum Optics, Garching, Germany.
2) Ludwig-Maximilians-University Munich, Garching, Germany.
Multilayer dielectric mirrors are the limiting factor to scale up and simplify high-power femtosecond laser systems towards shorter pulse durations and higher average or peak powers. Detailed characterization including laser-induced damage is pursued by using nano-FTIR, which features strong material contrast at lateral resolution of only 20 nm. The high sensitivity of chemical recognition is due to phonon resonance of the constituent layers. For the investigated mirror these are TaO5 and SiO2 showing resonances at 680 and 1050 cm-1, respectively. Using 30 fs pulses we observe two different damage mechanisms.
Primary author
Sergiu Amarie
(Max Planck Institute of Quantum Optics)
