Plasmonic enhancement of High Harmonic Generation revisited: Predominance of Atomic Line Emission
1 Courant Research Center Nano-Spectroscopy and X-Ray Imaging, University of Göttingen, 37077 Göttingen, Germany
2 Ostwald-Institute for Physical and Theoretical Chemistry, University of Leipzig, 04103 Leipzig, Germany
We demonstrate nanostructure-enhanced extreme ultraviolet fluorescence from noble gases driven by low-energy, few-cycle light pulses. Despite sufficient local intensities, plasmon-enhanced high harmonic generation is not observed, which follows from the small, nanometer-size coherent source volume.
© Owned by the authors, published by EDP Sciences, 2013
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