SAMOP 2023 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 22: Poster II
Q 22.71: Poster
Dienstag, 7. März 2023, 16:30–19:00, Empore Lichthof
High-order harmonic generation in gases with µJ laser pulses — •Matthias Meier1, Philip Dienstbier1, Yuya Morimoto2, Francesco Tani3, and Peter Hommelhoff1 — 1Department of Physics, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), 91058 Erlangen, Germany — 2RIKEN Cluster for Pioneering Research (CPR), RIKEN Center for Advanced Photonics (RAP), Japan — 3Max Planck Institute for the Science of Light, 91058 Erlangen, Germany
Pump-probe schemes involving strong few-cycle driving pulses in the infrared in combination with attosecond probe pulses in the extreme ultraviolet are a powerful spectroscopic tool to investigate the ultrafast dynamics of electrons inside materials. For many spectroscopic schemes, it is desirable or even necessary to provide pump and probe pulses at high repetition rates for sufficient statistics and signal-to-noise ratios in the detection. Here, we present a laser system delivering infrared near infrared 8 fs pulses with 18 µJ energy and repetition rates up to 1 MHz. The few-cycle pulses are obtained by shortening 210 fs pulses from an Ytterbium laser amplifier with stable carrier-envelope phase. For this we use a two-stage compressor based on two argon-filled hollow-core photonic crystal fibers. The pulses are then delivered to a vacuum chamber which is set up for generating and characterizing isolated attosecond pulses.