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Wanie, Vincent [VerfasserIn]; Barbato, Pasquale [VerfasserIn]; Hahne, Josina [VerfasserIn]; Ryabchuk, Sergey [VerfasserIn]; Wahid, Ammar Bin [VerfasserIn]; Amorim, David [VerfasserIn]; Månsson, Erik P. [VerfasserIn]; Trabattoni, Andrea [VerfasserIn]; Osellame, Roberto [VerfasserIn]; Martínez Vázquez, Rebeca [VerfasserIn]; Calegari, Francesca [VerfasserIn]

Ultraviolet supercontinuum generation using a differentially-pumped integrated glass chip - [published Version]

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  • Medientyp: E-Artikel; Sonstige Veröffentlichung
  • Titel: Ultraviolet supercontinuum generation using a differentially-pumped integrated glass chip
  • Beteiligte: Wanie, Vincent [VerfasserIn]; Barbato, Pasquale [VerfasserIn]; Hahne, Josina [VerfasserIn]; Ryabchuk, Sergey [VerfasserIn]; Wahid, Ammar Bin [VerfasserIn]; Amorim, David [VerfasserIn]; Månsson, Erik P. [VerfasserIn]; Trabattoni, Andrea [VerfasserIn]; Osellame, Roberto [VerfasserIn]; Martínez Vázquez, Rebeca [VerfasserIn]; Calegari, Francesca [VerfasserIn]
  • Erschienen: Bristol : IOP Publishing, 2024
  • Erschienen in: JPhys Photonics (Journal of Physics: Photonics) 6 (2024), Nr. 2 ; JPhys Photonics (Journal of Physics: Photonics)
  • Ausgabe: published Version
  • Sprache: Englisch
  • DOI: https://doi.org/10.15488/17067; https://doi.org/10.1088/2515-7647/ad2bd3
  • Schlagwörter: third-harmonic generation ; differential pumping ; frequency conversion ; femtosecond laser micromachining ; ultrafast UV spectroscopy ; ultraviolet radiation ; ultrafast optics
  • Entstehung:
  • Anmerkungen: Diese Datenquelle enthält auch Bestandsnachweise, die nicht zu einem Volltext führen.
  • Beschreibung: We investigate the generation of ultrabroadband femtosecond ultraviolet (UV) radiation via third-order harmonic generation in highly confined gas media. A dual-stage differential-pumping scheme integrated into a glass microfluidic chip provides an exceptional gas confinement up to several bar and allows the apparatus to be operated under high-vacuum environment. UV pulses are generated both in argon and neon with up to ∼0.8 μJ energy and 0.2% conversion efficiency for spectra that cover the UVB and UVC regions between 200 and 325 nm. Numerical simulations based on the unidirectional pulse propagation equation reveal that ionization plays a critical role for extending the spectral bandwidth of the generated third-harmonic pulse beyond the tripled 800 nm driving laser pulse bandwidth. By delivering UV supercontinua supporting Fourier transform limits below 2 fs, as well as comparable pulse energies with respect to capillary-based techniques that typically provide high spectral tunability but produce narrower bandwidths, our compact device makes a step forward towards the production and application of sub-fs UV pulses for the investigation of electron dynamics in neutral molecules.
  • Zugangsstatus: Freier Zugang