Dresden 2020 – wissenschaftliches Programm

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DS: Fachverband Dünne Schichten

DS 32: Poster: Optical Analysis of Thin Films

DS 32.7: Poster

Mittwoch, 18. März 2020, 15:00–18:00, P1A

Real-time pump-probe microscopy of single-shot laser thin film ablation — •Till Wachweger — Universität Bayreuth

The interaction of single ultrashort laser pulses with materials allows for tailored phase changes and precise microprocessing. Despite existing ultrafast instrumentations, insights into fast irreversible phenomena in inhomogeneous materials and at individual positions are severely limited due to the lack of real-time acquisition. We present an interferometric real-time pump-probe microscopy setup which is used to study the lift-off of a metallic thin film layer. A sub-200fs laser pulse induces the ablation, and the lift-off progress is monitored via high repetitive interferometry based on the time-stretch Dispersive Fourier Transformation.