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  • 2013 Conference on Lasers and Electro-Optics - International Quantum Electronics Conference
  • (Optica Publishing Group, 2013),
  • paper CD_3_6

Nonlinear optics in hollow core PCF filled with gaseous and supercritical xenon

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Abstract

Gas-filled kagomé-lattice hollow core photonic crystal fibre (HC-PCF) is attractive for nonlinear optical experiments, offering a broad transmission window, a high damage threshold and low loss compared to capillaries [1]. Its dispersion is uniquely low and smooth from the UV to the IR and can be tuned simply by varying the gas pressure. Recently we demonstrated tuning of the zero dispersion wavelength (ZDW) from 300 to 900 nm in an argon-filled kagomé HC-PCF by varying the gas pressure from 1 to 150 bar [2]. The concomitant increase in density brings the nonlinearity to within an order of magnitude of that of fused silica. Nonlinear effects such as the generation of tunable deep-UV light via dispersive wave emission, and the observation of blue-shifting solitons due to ionization effects, can be observed in these fibres. Since both these phenomena rely on soliton pulse compression to achieve high peak intensities (which can be as high as 1015 W/cm2), the dispersion must be anomalous at the pump laser wavelength (800 nm, pulse duration 150 fs) [3]. At the high gas densities reported in this paper, however, the normal dispersion of the gas dominates over the weaker anomalous dispersion of the kagomé fibre.

© 2013 IEEE

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