Control of ultrafast pulses in a hydrogen-filled hollow-core photonic-crystal fiber by Raman coherence

F. Belli, A. Abdolvand, J. C. Travers, and P. St. J. Russell
Phys. Rev. A 97, 013814 – Published 12 January 2018

Abstract

We present the results of an experimental and numerical investigation into temporally nonlocal coherent interactions between ultrashort pulses, mediated by Raman coherence, in a gas-filled kagome-style hollow-core photonic-crystal fiber. A pump pulse first sets up the Raman coherence, creating a refractive index spatiotemporal grating in the gas that travels at the group velocity of the pump pulse. Varying the arrival time of a second, probe, pulse allows a high degree of control over its evolution as it propagates along the fiber through the grating. Of particular interest are soliton-driven effects such as self-compression and dispersive wave (DW) emission. In the experiments reported, a DW is emitted at 300nm and exhibits a wiggling effect, with its central frequency oscillating periodically with pump-probe delay. The results demonstrate that a strong Raman coherence, created in a broadband guiding gas-filled kagome photonic-crystal fiber, can be used to control the nonlinear dynamics of ultrashort probe pulses, even in difficult-to-access spectral regions such as the deep and vacuum ultraviolet.

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  • Received 13 March 2017

DOI:https://doi.org/10.1103/PhysRevA.97.013814

©2018 American Physical Society

Physics Subject Headings (PhySH)

Condensed Matter, Materials & Applied PhysicsNonlinear DynamicsGeneral PhysicsAtomic, Molecular & Optical

Authors & Affiliations

F. Belli1,*, A. Abdolvand1,†, J. C. Travers1,2, and P. St. J. Russell1

  • 1Max Planck Institute for the Science of Light, Staudtstrasse 2, 91058 Erlangen, Germany
  • 2School of Engineering and Physical Sciences, Heriot-Watt University, Edinburgh EH14 4AS, United Kingdom

  • *Present address: School of Engineering and Physical Sciences, Heriot-Watt University, Edinburgh EH14 4AS, UK; f.belli@hw.ac.uk
  • Present address: School of Electrical and Electronic Engineering, Nanyang Technological University, 50 Nanyang Avenue, 639798 Singapore.

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Vol. 97, Iss. 1 — January 2018

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