Generation of deep ultraviolet sub-2-fs pulses
Mara GalliPhysics Department, Politecnico di Milano, 32 Piazza Leonardo da Vinci, Milano 20133, ItalyVincent WanieInstitut National de la Recherche Scientifique, Centre Énergie Matériaux et Télécommunications, 1650 Blvd. Lionel-Boulet, Varennes, Québec J3X1S2, CanadaDiogo Pereira LopesErik P. MånssonCenter for Free-Electron Laser Science (CFEL), DESY, 85 Notkestraße, Hamburg, 22607, GermanyAndrea TrabattoniCenter for Free-Electron Laser Science (CFEL), DESY, 85 Notkestraße, Hamburg, 22607, GermanyLorenzo ColaizziCenter for Free-Electron Laser Science (CFEL), DESY, 85 Notkestraße, Hamburg, 22607, GermanyKrishna SaraswathulaCenter for Free-Electron Laser Science (CFEL), DESY, 85 Notkestraße, Hamburg, 22607, GermanyAndrea CartellaThe Hamburg Centre for Ultrafast Imaging, Universität Hamburg, 149 Luruper Chaussee, Hamburg 22761, GermanyFabio FrassettoInstitute for Photonics and Nanotechnologies, IFN-CNR, 7 Via Trasea, Padova 35131, ItalyLuca PolettoInstitute for Photonics and Nanotechnologies, IFN-CNR, 7 Via Trasea, Padova 35131, ItalyFrançois LégaréInstitut National de la Recherche Scientifique, Centre Énergie Matériaux et Télécommunications, 1650 Blvd. Lionel-Boulet, Varennes, Québec J3X1S2, CanadaS. StagiraPhysics Department, Politecnico di Milano, 32 Piazza Leonardo da Vinci, Milano 20133, ItalyM. NisoliPhysics Department, Politecnico di Milano, 32 Piazza Leonardo da Vinci, Milano 20133, ItalyRebeca Martìnez VàzquezInstitute for Photonics and Nanotechnologies, IFN-CNR, 32 Piazza Leonardo da Vinci, Milano 20133, ItalyRoberto OsellameInstitute for Photonics and Nanotechnologies, IFN-CNR, 32 Piazza Leonardo da Vinci, Milano 20133, ItalyFrancesca CalegariCenter for Free-Electron Laser Science (CFEL), DESY, 85 Notkestraße, Hamburg, 22607, Germany
2019en
ABI
Аннотация
We demonstrate the generation of few-cycle deep ultraviolet pulses via frequency upconversion of 5-fs near-infrared pulses in argon using a laser-fabricated gas cell. The measured spectrum extends from 210 to 340 nm, corresponding to a transform-limited pulse duration of 1.45 fs. We extract from a dispersion-free second-order cross-correlation measurement a pulse duration of 1.9 fs, defining a new record in the deep ultraviolet spectral range.
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