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DOE OSTI · 1807509

Table-top extreme ultraviolet second harmonic generation

Helk, Tobias·Berger, Emma·Jamnuch, Sasawat·Hoffmann, Lars·Kabacinski, Adeline·Gautier, Julien·Tissandier, Fabien·Goddet, Jean-Philipe·Chang, Hung-Tzu·Oh, Juwon·Pemmaraju, C. Das·Pascal, Tod A.·Sebban, Stephane·Spielmann, Christian·Zuerch, Michael
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Abstract

The lack of available table-top extreme ultraviolet (XUV) sources with high enough fluxes and coherence properties has limited the availability of nonlinear XUV and x-ray spectroscopies to free-electron lasers (FELs). Here, we demonstrate second harmonic generation (SHG) on a table-top XUV source by observing SHG near the Ti M 2,3 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.

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BibTeXRIS

Helk, Tobias, Berger, Emma, Jamnuch, Sasawat, Hoffmann, Lars, Kabacinski, Adeline, Gautier, Julien, Tissandier, Fabien, Goddet, Jean-Philipe, Chang, Hung-Tzu, Oh, Juwon, Pemmaraju, C. Das, Pascal, Tod A., Sebban, Stephane, Spielmann, Christian, Zuerch, Michael. 2021-05-19. Table-top extreme ultraviolet second harmonic generation. https://doi.org/10.1126/sciadv.abe2265

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