Direct temporal characterization of sub-3-fs deep UV pulses generated by resonant dispersive wave emission

M. Reduzzi, M. Pini, L. Mai, F. Cappenberg, L. Colaizzi, F. Vismarra, A. Crego, M. Lucchini, C. Brahms, J. C. Travers, R. Borrego-Varillas, M. Nisoli

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We report on the complete temporal characterization of ultrashort pulses, generated by resonant dispersive wave emission in gas-filled hollow-capillary fibers, with energy in the microjoule range and continuously tunable from the deep-ultraviolet to the ultraviolet. Temporal characterization of such ultrabroad pulses, particularly challenging in this spectral region, was performed using an all-in-vacuum setup for self-diffraction frequency resolved optical gating (SD-FROG). Sub-3-fs pulses were measured, tunable from 250 nm to 350 nm, with a minimum pulse duration of 2.4 ± 0.1 fs.
Original languageEnglish
Pages (from-to)26854-26864
Number of pages11
JournalOptics Express
Issue number16
Early online date27 Jul 2023
Publication statusPublished - 31 Jul 2023


  • Atomic and Molecular Physics, and Optics

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