Direct characterization of tuneable few-femtosecond dispersive-wave pulses in 
the deep UV

Brahms, Christian; Austin, Dane R.; Tani, Francesco; Johnson, Allan S.; Garratt, Douglas; Travers, John. C.; Tisch, John W. G.; Russell, Philip; Marangos, Jon P.

doi:10.1364/OL.44.000731

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Direct characterization of tuneable few-femtosecond dispersive-wave pulses in the deep UV

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Tani, Francesco
Max Planck Institute for the Science of Light, Max Planck Society;

Travers, John. C.
School of Engineering and Physical Sciences, Heriot-Watt University;
Max Planck Institute for the Science of Light, Max Planck Society;

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Russell, Philip
Max Planck Institute for the Science of Light, Max Planck Society;

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Citation

Brahms, C., Austin, D. R., Tani, F., Johnson, A. S., Garratt, D., Travers, J. C., et al. (2019). Direct characterization of tuneable few-femtosecond dispersive-wave pulses in the deep UV. Optics Letters, 44(4), 731-734. doi:10.1364/OL.44.000731.

Cite as: https://hdl.handle.net/21.11116/0000-0003-3BBA-A

Abstract

Dispersive wave emission (DWE) in gas-filled hollow-core dielectric waveguides is a promising source of tuneable coherentand broadband radiation, but so far the generation of fewfemtosecond pulses using this technique has not been demonstrated. Using in-vacuum frequency-resolved optical gating, we directly characterize tuneable 3 fs pulses in the deep ultraviolet generated via DWE. Through numerical simulations, we identify that the use of a pressure gradient in the waveguide is critical for the generation of short pulses.