Low-Threshold Green-Pumped Ultraviolet Resonant Dispersive-Wave Emission in Small-Core Anti-Resonant Hollow-Fibre

Mohammed Sabbah, Kerrianne Harrington, Robbie Mears, Christian Brahms, Adam Alisauskas, Leah R. Murphy, Stephanos Yerolatsitis, William J. Wadsworth, Jonathan C. Knight, James M. Stone, Robert. R. Thomson, Tim. A. Birks, John C. Travers

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)


Resonant dispersive-wave (RDW) emission from solitons in gas-filled hollow-core fibres is an established technique for generating tunable ultraviolet (UV) pulses [1], [2]. During soliton self-compression of the pump pulse along the fibre, its spectrum broadens until it overlaps with phase-matched wavelengths in the normal dispersion region, allowing an efficient transfer of energy to a linearly propagating RDW. In the case of hollow-core fibres, the RDW phase-matching wavelengths can be tuned simply by changing the pressure of the filling gas. UV RDW emission has been shown to be a useful tool for multiple applications, such as spectroscopy and pump-probe experiments [3], [4]. UV RDW emission is most commonly achieved using gas-filled hollow-core fibres with a core diameter ranging from ∼25 μm up to ∼450 μm [1], [5]. Even the lower end of this range usually requires the pump energy to be at the μJ level, requiring amplified laser systems. Recently, the use of a much smaller core size enabled the use of less than 150 nJ pump energy from a Ti:Sapphire laser to achieve UV RDW emission [6].
Original languageEnglish
Title of host publication2023 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC)
ISBN (Electronic)9798350345995
Publication statusPublished - 4 Sept 2023


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