Table-top extreme ultraviolet second harmonic generation
Tobias Helk, Emma Berger, Sasawat Jamnuch, Lars Hoffmann, Adeline Kabacinski, J. Gautier, F. Tissandier, Jean-Philipe Goddet, Hung-Tzu Chang, Juwon Oh, C. D. Pemmaraju, Tod A. Pascal, S. Sebban, Christian Spielmann, Michael Zuerch
Abstract
edge with a high-harmonic seeded soft x-ray laser. Furthermore, this experiment represents the first SHG experiment in the XUV. First-principles electronic structure calculations suggest the surface specificity and separate the observed signal into its resonant and nonresonant contributions. The realization of XUV-SHG on a table-top source opens up more accessible opportunities for the study of element-specific dynamics in multicomponent systems where surface, interfacial, and bulk-phase asymmetries play a driving role.