Applied Physics B

, Volume 74, Issue 4, pp 307–311

Two-octave spectral broadening of subnanojoule Cr:forsterite femtosecond laser pulses in tapered fibers

Authors

  • D.A. Akimov
    • Physics Faculty, International Laser Center, M.V. Lomonosov Moscow State University, 119899 Moscow, Russia
  • A.A. Ivanov
    • Center of Photochemistry, Russian Academy of Sciences, ul. Novatorov 7a, Moscow 117421, Russia
  • M.V. Alfimov
    • Center of Photochemistry, Russian Academy of Sciences, ul. Novatorov 7a, Moscow 117421, Russia
  • S.N. Bagayev
    • Institute of Laser Physics, Siberian Branch, Russian Academy of Sciences, pr. Lavrent’eva 13/3, Novosibirsk 630090, Russia
  • T.A. Birks
    • Department of Physics, University of Bath, Bath BA2 7AY, UK
  • W.J. Wadsworth
    • Department of Physics, University of Bath, Bath BA2 7AY, UK
  • P.St.J. Russell
    • Department of Physics, University of Bath, Bath BA2 7AY, UK
  • A.B. Fedotov
    • Physics Faculty, International Laser Center, M.V. Lomonosov Moscow State University, 119899 Moscow, Russia
  • V.S. Pivtsov
    • Institute of Laser Physics, Siberian Branch, Russian Academy of Sciences, pr. Lavrent’eva 13/3, Novosibirsk 630090, Russia
  • A.A. Podshivalov
    • Physics Faculty, International Laser Center, M.V. Lomonosov Moscow State University, 119899 Moscow, Russia
  • A.M. Zheltikov
    • Physics Faculty, International Laser Center, M.V. Lomonosov Moscow State University, 119899 Moscow, Russia

DOI: 10.1007/s003400200811

Cite this article as:
Akimov, D., Ivanov, A., Alfimov, M. et al. Appl Phys B (2002) 74: 307. doi:10.1007/s003400200811

Abstract.

Spectral broadening of femtosecond Cr:forsterite laser pulses is enhanced due to the use of tapered fibers. Supercontinuum generation with unamplified subnanojoule femtosecond Cr:forsterite laser pulses is observed for the first time. With 40-fs 0.6-nJ pulses of 1.25-μm Cr:forsterite laser radiation coupled into a tapered fiber having a taper waist diameter of about 2 μm and a taper waist length of 90 mm, we observed the spectra spanning more than two octaves at the output of the fiber in the regime of anomalous group-velocity dispersion. This result opens the way for the creation of compact femtosecond Cr:forsterite laser plus tapered fiber systems for optical metrology and biomedical applications.

PACS: 42.65.Wi; 42.81.Qb
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© Springer-Verlag 2002