Effect of anti-crossings with cladding resonances on ultrafast nonlinear dynamics in gas-filled PCFs

Abstract

Spectral anti-crossings between the fundamental guided mode and core wall resonances alter the dispersion in hollow-core anti-resonant-reflection photonic crystal fibers. Here we study the effect of this dispersion change on the nonlinear propagation and dynamics of ultrashort pulses. We find that it causes emission of narrow spectral peaks through a combination of four-wave mixing and dispersive wave emission. We further investigate the influence of the anti-crossings on nonlinear pulse propagation and show that their impact can be minimized by adjusting the core-wall thickness in such a way that the anti-crossings lie spectrally distant from the pump wavelength.

arXiv comment5 pages, 5 figures

References in corpus (6)

• Phase Matching of High-Order Harmonics in Hollow Waveguides
• Supercontinuum generation in the vacuum ultraviolet through dispersive-wave and soliton-plasma interaction in noble-gas-filled hollow-core photonic crystal fiber
• Generation of micro-J pulses in the deep UV at MHz repetition rates
• Soliton explosion driven multi-octave supercontinuum generation by geometry-enforced dispersion design in antiresonant hollow-core fibers
• Novel mid-infrared dispersive wave generation in gas-filled PCF by transient ionization-driven changes in dispersion
• Continuously wavelength-tunable high harmonic generation via soliton dynamics

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