Applied Physics B

, Volume 77, Issue 2–3, pp 291–298

UV generation in a pure-silica holey fiber

  • J.H.V. Price
  • T.M. Monro
  • K. Furusawa
  • W. Belardi
  • J.C. Baggett
  • S. Coyle
  • C. Netti
  • J.J. Baumberg
  • R. Paschotta
  • D.J. Richardson
Regular Paper

Abstract

We report supercontinuum generation extending to 300 nm in the UV from a pure-silica holey fiber. The broad spectrum was obtained by launching ultra-short pulses (∼150 fs, 10 nJ at 820 nm) from an amplified Ti:sapphire laser. The extension of holey-fiber-based supercontinuum generation into the UV should prove to be of immediate application in spectroscopy. By slightly detuning the launch conditions we excited a higher order spatial mode, which produced a narrower supercontinuum, but with enhanced conversion efficiency at a series of blue/UV peaks around 360 nm. We present numerical simulations, which suggest that differences in the dispersion profiles between the modes are an important factor in explaining this enhancement. In a related experiment, using the same laser source and fiber, we demonstrate a visible supercontinuum from several subsidiary cores, with distinct colours in each core. The subsidiary cores were excited by an appropriate input coupling. Fabrication of a fiber with a range of core sizes (dispersion profiles) for tailored supercontinuum generation can therefore be envisaged for practical applications.

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Copyright information

© Springer-Verlag 2003

Authors and Affiliations

  • J.H.V. Price
    • 1
  • T.M. Monro
    • 1
  • K. Furusawa
    • 1
  • W. Belardi
    • 1
  • J.C. Baggett
    • 1
  • S. Coyle
    • 2
  • C. Netti
    • 2
  • J.J. Baumberg
    • 2
  • R. Paschotta
    • 3
  • D.J. Richardson
    • 1
  1. 1.Optoelectronics Research CentreUniversity of SouthamptonUK
  2. 2.Department of Physics and AstronomyUniversity of SouthamptonUK
  3. 3.Ultrafast Laser Physics, Institute of Quantum ElectronicsETH HönggerbergZurichSwitzerland

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