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dc.contributor.authorBirk, Paul
dc.contributor.authorStooss, Veit
dc.contributor.authorHartmann, Maximilian
dc.contributor.authorBorisova, Gergana D
dc.contributor.authorBlaettermann, Alexander
dc.contributor.authorHeldt, Tobias
dc.contributor.authorBartschat, Klaus
dc.contributor.authorOtt, Christian
dc.contributor.authorPfeifer, Thomas
dc.date.accessioned2020-09-18T06:16:13Z
dc.date.available2020-09-18T06:16:13Z
dc.date.issued2020
dc.identifier.issn0953-4075en_US
dc.identifier.doi10.1088/1361-6455/ab7c3fen_US
dc.identifier.urihttp://hdl.handle.net/10072/397673
dc.description.abstractThe laser-field-modified dipole response of the first ionization threshold of helium is studied by means of attosecond transient absorption spectroscopy. We resolve light-induced time-dependent structures in the photoabsorption spectrum both below and above the ionization threshold. By comparing the measured results to a quantum-dynamical model, we isolate the contributions of the unbound electron to these structures. They originate from light-induced couplings of near-threshold bound and continuum states and light-induced energy shifts of the free electron. The ponderomotive energy, at low laser intensities, is identified as a good approximation for the perturbed continuum response.en_US
dc.description.peerreviewedYesen_US
dc.languageEnglishen_US
dc.publisherIOP Publishingen_US
dc.relation.ispartofpagefrom124002en_US
dc.relation.ispartofissue12en_US
dc.relation.ispartofjournalJournal of Physics B: Atomic, Molecular and Optical Physicsen_US
dc.relation.ispartofvolume53en_US
dc.subject.fieldofresearchAtomic, Molecular, Nuclear, Particle and Plasma Physicsen_US
dc.subject.fieldofresearchOptical Physicsen_US
dc.subject.fieldofresearchTheoretical and Computational Chemistryen_US
dc.subject.fieldofresearchcode0202en_US
dc.subject.fieldofresearchcode0205en_US
dc.subject.fieldofresearchcode0307en_US
dc.subject.keywordsScience & Technologyen_US
dc.subject.keywordsPhysical Sciencesen_US
dc.subject.keywordsOpticsen_US
dc.subject.keywordsPhysics, Atomic, Molecular & Chemicalen_US
dc.titleAttosecond transient absorption of a continuum thresholden_US
dc.typeJournal articleen_US
dc.type.descriptionC1 - Articlesen_US
dcterms.bibliographicCitationBirk, P; Stooss, V; Hartmann, M; Borisova, GD; Blaettermann, A; Heldt, T; Bartschat, K; Ott, C; Pfeifer, T, Attosecond transient absorption of a continuum threshold, Journal of Physics B: Atomic, Molecular and Optical Physics, 2020, 53 (12), pp. 124002en_US
dcterms.licensehttp://creativecommons.org/licenses/by/4.0/en_US
dc.date.updated2020-09-18T06:13:19Z
dc.description.versionVersion of Record (VoR)en_US
gro.rights.copyright© 2020 The Author 1 (s). Published by IOP Publishing Ltd. Original content from this work may be used under the terms of the Creative Commons Attribution 4.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.en_US
gro.hasfulltextFull Text
gro.griffith.authorBartschat, Klaus


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