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

Dispersive wave emission (DWE) in gas-filled hollow-core dielectric waveguides is a promising source of tuneable coherent and broadband radiation, but so far the generation of few-femtosecond pulses using this technique has not been demonstrated. Using in-vacuum frequency-resolved optical gating, we...

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Published in:arXiv.org 2019-03
Main Authors: Brahms, Christian, Austin, Dane R, Tani, Francesco, Johnson, Allan S, Garratt, Douglas, Travers, John C, Tisch, John W G, Russell, Philip St J, Marangos, Jon P
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Language:English
Subjects:
Broadband
Computer simulation
Dielectric waveguides
Femtosecond pulses
Short pulses
Wave dispersion
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container_title arXiv.org
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creator Brahms, Christian
Austin, Dane R
Tani, Francesco
Johnson, Allan S
Garratt, Douglas
Travers, John C
Tisch, John W G
Russell, Philip St J
Marangos, Jon P
description Dispersive wave emission (DWE) in gas-filled hollow-core dielectric waveguides is a promising source of tuneable coherent and broadband radiation, but so far the generation of few-femtosecond pulses using this technique has not been demonstrated. Using in-vacuum frequency-resolved optical gating, we directly characterise tuneable 3fs 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.
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subjects Broadband
Computer simulation
Dielectric waveguides
Femtosecond pulses
Short pulses
Wave dispersion
title Direct characterisation of tuneable few-femtosecond dispersive-wave pulses in the deep UV
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