Direct characterization of tuneable few-femtosecond dispersive-wave pulses in the deep UV.
Opt Lett
; 44(4): 731-734, 2019 Feb 15.
Article
en En
| MEDLINE
| ID: mdl-30767973
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 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.
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01-internacional
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MEDLINE
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En
Revista:
Opt Lett
Año:
2019
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Article
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Estados Unidos