Generation of deep ultraviolet sub-2-fs pulses

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 d...

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Bibliographic Details
Published in:Optics letters 2019-03, Vol.44 (6), p.1308-1311
Main Authors: Galli, Mara, Wanie, Vincent, Lopes, Diogo Pereira, Månsson, Erik P, Trabattoni, Andrea, Colaizzi, Lorenzo, Saraswathula, Krishna, Cartella, Andrea, Frassetto, Fabio, Poletto, Luca, Légaré, François, Stagira, Salvatore, Nisoli, Mauro, Martínez Vázquez, Rebeca, Osellame, Roberto, Calegari, Francesca
Format: Article
Language:English
Subjects:
Argon
Correlation analysis
Pulse duration
Ultraviolet spectra
Upconversion
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Summary: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.
ISSN:0146-9592
1539-4794
DOI:10.1364/OL.44.001308