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Boosting terahertz generation in laser-field ionized gases using a sawtooth wave shape

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dc.contributor.authorGonzález de Alaiza, Pedro
dc.contributor.authorBabushkin, Ihar
dc.contributor.authorBergé, Luc
dc.contributor.authorSkupin, Stephan
dc.contributor.authorCabrera Granado, Eduardo
dc.contributor.authorKöhler, Christian
dc.contributor.authorMörgner, Uwe
dc.contributor.authorHusakou, Anton V.
dc.contributor.authorHerrmann, Jens
dc.date.accessioned2023-06-18T05:42:05Z
dc.date.available2023-06-18T05:42:05Z
dc.date.issued2015-05-06
dc.description© 2015 American Physical Society
dc.description.abstractBroadband ultrashort terahertz (THz) pulses can be produced using plasma generation in a noble gas ionized by femtosecond two-color pulses. Here we demonstrate that, by using multiple-frequency laser pulses, one can obtain a waveform which optimizes the free electron trajectories in such a way that they acquire the largest drift velocity. This allows us to increase the THz conversion efficiency to 2%, an unprecedented performance for THz generation in gases. In addition to the analytical study of THz generation using a local current model, we perform comprehensive 3D simulations accounting for propagation effects which confirm this prediction. Our results show that THz conversion via tunnel ionization can be greatly improved with well-designed multicolor pulses.
dc.description.departmentSección Deptal. de Óptica (Óptica)
dc.description.facultyFac. de Óptica y Optometría
dc.description.refereedTRUE
dc.description.sponsorshipDFG
dc.description.statuspub
dc.eprint.idhttps://eprints.ucm.es/id/eprint/40970
dc.identifier.doi10.1103/PhysRevLett.114.183901
dc.identifier.issn0031-9007
dc.identifier.officialurlhttps://doi.org/10.1103/PhysRevLett.114.183901
dc.identifier.relatedurlhttp://journals.aps.org/prl/abstract/10.1103/PhysRevLett.114.183901
dc.identifier.urihttps://hdl.handle.net/20.500.14352/23092
dc.issue.number18
dc.journal.titlePhysical Review Letters
dc.language.isoeng
dc.page.initial183901
dc.publisherAmerican Physical Society
dc.relation.projectIDProject No. HU 1593/2-1
dc.rights.accessRightsopen access
dc.subject.cdu537.533.3
dc.subject.cdu535.374
dc.subject.cdu532.59
dc.subject.keywordElectrons
dc.subject.keywordTeraherz waves
dc.subject.keywordLaser
dc.subject.keywordMultiple frequency
dc.subject.keywordIonization
dc.subject.keywordInert gases
dc.subject.ucmOptoelectrónica
dc.subject.ucmÓptica física, óptica cuántica
dc.subject.ucmLáseres
dc.subject.unesco2209.19 Óptica física
dc.subject.unesco2209.10 Láseres
dc.titleBoosting terahertz generation in laser-field ionized gases using a sawtooth wave shape
dc.typejournal article
dc.volume.number114
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