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Ultraviolet pulse compression via cross-phase modulation in a hollow-core fibre

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posted on 2023-11-17, 07:04 authored by Giulio Maria Rossi, Yujiao Jiang, John Messerschmidt, Fabian Scheiba, Igor Tyulnev, Lu Wang, Zhiyi Wei
Cross-phase modulation induced by an intense near-IR pulse propagating in gas-filled hollow-core fibre is used to spectrally broaden and temporally compress a co-propagating high-energy ultraviolet (UV) pulse, spanning the 260-320 nm region. The central wavelength, bandwidth and sign of the chirp of the output UV pulse can be controlled by tuning the initial delay among the two pulses, allowing us to demonstrate UV pulses with >10 μJ of energy that self-compress down to 6 fs after some propagation in air. This technique opens a way towards the realisation of few-fs ultraviolet pulses with tunable spectrum and high energy.

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Funder Name

Cluster of Excellence ’CUI: Advanced Imaging of Matter’ of the Deutsche Forschungsgemeinschaft (DFG) - EXC 2056 - project ID 390715994; Deutsches Elektronen-Synchrotron DESY, a member of the Helmholtz Association (HGF)

Preprint ID

110845

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    Ultrashort pulsesultraviolet pulsesultrafast science

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    Optica Publishing Group Non-Exclusive License

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