Nano-plasmonic near field phase matching of attosecond pulses

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dc.identifier.uri Shaaran, Tahir Nicolas, Rana Iwan, Bianca Kovacev, Milutin Merdji, Hamed 2017-08-30T11:32:58Z 2017-08-30T11:32:58Z 2017
dc.identifier.citation Shaaran, T.; Nicolas, R.; Iwan, B.; Kovacev, M.; Merdji, H.: Nano-plasmonic near field phase matching of attosecond pulses. In: Scientific Reports 7 (2017), Nr. 1, 6356. DOI:
dc.description.abstract Nano-structures excited by light can enhance locally the electric field when tuned to plasmonic resonances. This phenomenon can be used to boost non-linear processes such as harmonic generation in crystals or in gases, Raman excitation, and four wave mixing. Here we present a theoretical investigation of the near-field phase matching of attosecond pulses emitted by high-order harmonic generation (HHG) of an atom immersed in a multi-cycle femtosecond infrared laser field and a spatially inhomogeneous plasmonic field. We demonstrate that the spatial inhomogeneity factor of the plasmonic field strongly affects the electron trajectory and recombination time which can be used to control the attosecond emission. For further insight into the plasmonic field effect, we monitor the phase of each quantum path as a function of the inhomogeneity strength. Moreover, we investigate the attosecond emission as a function of near-field phase matching effects. This is achieved by calculating the coherent field superposition of attosecond pulses emitted from various intensities or field inhomogeneities. Finally, far-field and near-field phase matching effects are combined to modulate the harmonic spectral phase towards the emission of a single attosecond pulse. eng
dc.language.iso eng
dc.publisher London : Nature Publishing Group
dc.relation.ispartofseries Scientific Reports 7 (2017), Nr. 1
dc.rights CC BY 4.0
dc.subject HHG eng
dc.subject XUV eng
dc.subject high-order harmonic generation eng
dc.subject.ddc 500 | Naturwissenschaften ger
dc.title Nano-plasmonic near field phase matching of attosecond pulses
dc.type article
dc.type Text
dc.relation.issn 2045-2322
dc.bibliographicCitation.issue 1
dc.bibliographicCitation.volume 7
dc.bibliographicCitation.firstPage 6356
dc.description.version publishedVersion
tib.accessRights frei zug�nglich

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