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K: Fachverband Kurzzeit- und angewandte Laserphysik
K 2: Poster
K 2.17: Poster
Dienstag, 15. März 2022, 16:30–18:30, P
Torus-knot angular momentum in bicircular high-harmonic generation — •Björn Minneker1,2,3, Birger Böning2,3, Anne Weber1, and Stephan Fritzsche1,2,3 — 1Theoretisch Physikalisches Institut, Friedrich-Schiller-Universität, Jena, Germany — 2GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt, Germany — 3Helmholtz Institut, Jena, Germany
We provide a model which demonstrates intuitively the conservation of the torus-knot angular momentum (TKAM) in bicircular high-harmonic generation and describes where it maid be found in the process. In addition, we discuss how topological non-trivial features can be formed from bicircular driving beams and the associated high-harmonic radiation. The topological non-triviality is a unique property that can not be seen in high harmonic generation by single beam configurations. In general, the topological non-trivial features of the harmonic radiation can be interesting for spectroscopy since topological structures are often robust with regard to various ambient conditions. However, to demonstrate these suggestions further investigations are necessary. Therefore, our work provides a different approach to thinking and speaking about high harmonic generation driven by bicircular twisted light beams.