High harmonic generation in monolayer MoS2 controlled by resonant and near-resonant pulses on ultrashort time scales

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dc.contributor.authorPeterka, Pavelcs
dc.contributor.authorSlobodeniuk, Arturcs
dc.contributor.authorNovotný, Tomášcs
dc.contributor.authorSuthar, Pawancs
dc.contributor.authorBartoš, Miroslavcs
dc.contributor.authorTrojánek, Františekcs
dc.contributor.authorMalý, Petrcs
dc.contributor.authorKozák, Martincs
dc.coverage.issue8cs
dc.coverage.volume8cs
dc.date.issued2023-08-01cs
dc.description.abstractWe report on experimental investigation of nonperturbative high harmonic generation (HHG) in monolayer MoS2 in the ultraviolet spectral region driven by mid-infrared light. We study how the HHG is influenced by pre-excitation of the monolayer using resonant and near-resonant pulses in a pump-probe-like scheme. The resonant light creates high density exciton population. Due to ultrafast dephasing caused by electron-electron scattering, the HHG is suppressed in the presence of pre-excited carriers. In the case of near-resonant excitation with photon energy below the exciton transition, the dynamics of the observed suppression of the HHG yield contains a fast component, which is a consequence of momentum scattering at carriers, which are excited by two-photon transition when the two pulses temporally overlap in the sample. This interpretation is supported by comparing the experimental data with theoretical calculations of the two-photon absorption spectrum of the MoS2 monolayer. This work demonstrates a possibility to control HHG in low-dimensional materials on ultrashort timescales by combining the driving strong-field pulse with a weak near-resonant light.en
dc.formattextcs
dc.format.extent8cs
dc.format.mimetypeapplication/pdfcs
dc.identifier.citationAPL Photonics. 2023, vol. 8, issue 8, 8 p.en
dc.identifier.doi10.1063/5.0158995cs
dc.identifier.issn2378-0967cs
dc.identifier.orcid0000-0002-5923-0260cs
dc.identifier.other184610cs
dc.identifier.researcheridB-3350-2014cs
dc.identifier.urihttp://hdl.handle.net/11012/245024
dc.language.isoencs
dc.publisherAIP Publishingcs
dc.relation.ispartofAPL Photonicscs
dc.relation.urihttps://pubs.aip.org/aip/app/article/8/8/086103/2905253/High-harmonic-generation-in-monolayer-MoS2cs
dc.rightsCreative Commons Attribution 4.0 Internationalcs
dc.rights.accessopenAccesscs
dc.rights.sherpahttp://www.sherpa.ac.uk/romeo/issn/2378-0967/cs
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/cs
dc.subjectEXCITONSen
dc.subjectFIELDen
dc.titleHigh harmonic generation in monolayer MoS2 controlled by resonant and near-resonant pulses on ultrashort time scalesen
dc.type.driverarticleen
dc.type.statusPeer-revieweden
dc.type.versionpublishedVersionen
sync.item.dbidVAV-184610en
sync.item.dbtypeVAVen
sync.item.insts2025.02.03 15:50:53en
sync.item.modts2025.01.17 16:34:53en
thesis.grantorVysoké učení technické v Brně. Středoevropský technologický institut VUT. Magneto-Optická a THz Spektroskopiecs
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