Novel mid-infrared dispersive wave generation in gas-filled PCF by transient ionization-driven changes in dispersion
arXiv:1701.04843 · doi:10.1038/s41467-017-00943-4
Abstract
Gas-filled hollow-core photonic crystal fibre (PCF) is being used to generate ever wider supercontinuum spectra, in particular via dispersive wave (DW) emission in the deep and vacuum ultraviolet, with a multitude of applications. DWs are the result of the resonant transfer of energy from a self-compressed soliton, a process which relies crucially on phase matching. It was recently predicted that, in the strong-field regime, the additional transient anomalous dispersion introduced by gas ionization would allow phase-matched DW generation in the mid-infrared (MIR)-something that is forbidden in the absence of free electrons. Here we report for the first time the experimental observation of such MIR DWs, embedded in a 4.7-octave-wide supercontinuum that uniquely reaches simultaneously to the vacuum ultraviolet, with up to 1.7 W of total average power.
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- Noise and spectral stability of deep-UV gas-filled fiber-based supercontinuum sources driven by ultrafast mid-IR pulses
- Nested-capillary anti-resonant silica fiber with mid-infrared transmission and low bending sensitivity at 4000 nm
- Long-lived refractive index changes induced by femtosecond ionization in gas-filled single-ring photonic crystal fibers
- Efficient soliton self-frequency shift in hydrogen-filled hollow-core fiber
- Multi-stage generation of extreme ultraviolet dispersive waves by tapering gas-filled hollow-core anti-resonant fibers
- Photoionization-assisted, high-efficiency emission of dispersive wave in gas-filled hollow-core photonic crystal fibers
- Pump-probe study of plasma dynamics in gas-filled photonic crystal fiber using counter-propagating solitons
- High Conversion Efficiency in Multi-mode Gas-filled Hollow-core Fiber
- Photoionization-induced broadband dispersive wave generated in an Ar-filled hollow-core photonic crystal fiber