Publikationen

HHG at the Carbon K-Edge Directly Driven by SRS Red-Shifted Pulses from an Ytterbium Amplifier

Autor(en)
Martin Dorner-Kirchner, Valentina Shumakova, Giulio Coccia, Bruno E. Schmidt, Vladimir Pervak, Audrius Pugzlys, Andrius Baltuška, Markus Kitzler-Zeiler, Paolo Antonio Carpeggiani
Abstrakt

In this work, we introduce a simplified approach to efficiently extend the high harmonic generation (HHG) cutoff in gases without the need for laser frequency conversion via parametric processes. Instead, we employ postcompression and red-shifting of a Yb:CaF2 laser via stimulated Raman scattering (SRS) in a nitrogen-filled stretched hollow core fiber. This driving scheme circumvents the low-efficiency window of parametric amplifiers in the 1100-1300 nm range. We demonstrate this approach being suitable for upscaling the power of a driver with an optimal wavelength for HHG in the highly desirable XUV range between 200 and 300 eV, up to the carbon K-edge. Due to the combination of power scalability of a low quantum defect ytterbium-based laser system with the high conversion efficiency of the SRS technique, we expect a significant increase in the generated photon flux in comparison with established platforms for HHG in the water window. We also compare HHG driven by the SRS scheme with the conventional self-phase modulation (SPM) scheme.

Organisation(en)
Fakultätszentrum für Nanostrukturforschung
Externe Organisation(en)
Technische Universität Wien, Politecnico di Milano, few-cycle Inc., Ludwig-Maximilians-Universität München, Ultrafast Innovations GmbH, Center for Physical Sciences and Technology
Journal
ACS Photonics
Band
10
Seiten
84-91
Anzahl der Seiten
8
ISSN
2330-4022
DOI
https://doi.org/10.1021/acsphotonics.2c01021
Publikationsdatum
01-2023
Peer-reviewed
Ja
ÖFOS 2012
103025 Quantenmechanik
Schlagwörter
ASJC Scopus Sachgebiete
Electronic, Optical and Magnetic Materials, Biotechnology, Atomic and Molecular Physics, and Optics, Electrical and Electronic Engineering
Link zum Portal
https://ucrisportal.univie.ac.at/de/publications/eb3c84f7-7f3d-46a8-9e39-50607c7886d6