Applied Physics B

, Volume 77, Issue 2, pp 291–298

UV generation in a pure-silica holey fiber

Authors

    • Optoelectronics Research CentreUniversity of Southampton
  • T.M. Monro
    • Optoelectronics Research CentreUniversity of Southampton
  • K. Furusawa
    • Optoelectronics Research CentreUniversity of Southampton
  • W. Belardi
    • Optoelectronics Research CentreUniversity of Southampton
  • J.C. Baggett
    • Optoelectronics Research CentreUniversity of Southampton
  • S. Coyle
    • Department of Physics and AstronomyUniversity of Southampton
  • C. Netti
    • Department of Physics and AstronomyUniversity of Southampton
  • J.J. Baumberg
    • Department of Physics and AstronomyUniversity of Southampton
  • R. Paschotta
    • Ultrafast Laser Physics, Institute of Quantum ElectronicsETH Hönggerberg
  • D.J. Richardson
    • Optoelectronics Research CentreUniversity of Southampton
Regular Paper

DOI: 10.1007/s00340-003-1174-y

Cite this article as:
Price, J., Monro, T., Furusawa, K. et al. Appl Phys B (2003) 77: 291. doi:10.1007/s00340-003-1174-y

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