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

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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.

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Authors and Affiliations

  1. Physics Faculty, International Laser Center, M.V. Lomonosov Moscow State University, 119899 Moscow, Russia, , , , , , RU

    D.A. Akimov, A.B. Fedotov, A.A. Podshivalov & A.M. Zheltikov

  2. Center of Photochemistry, Russian Academy of Sciences, ul. Novatorov 7a, Moscow 117421, Russia, , , , , , RU

    A.A. Ivanov & M.V. Alfimov

  3. Institute of Laser Physics, Siberian Branch, Russian Academy of Sciences, pr. Lavrent’eva 13/3, Novosibirsk 630090, Russia, , , , , , RU

    S.N. Bagayev & V.S. Pivtsov

  4. Department of Physics, University of Bath, Bath BA2 7AY, UK, , , , , , GB

    T.A. Birks, W.J. Wadsworth & P.St.J. Russell

Authors
  1. D.A. Akimov
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  2. A.A. Ivanov
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  3. M.V. Alfimov
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  4. S.N. Bagayev
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  5. T.A. Birks
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  6. W.J. Wadsworth
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  7. P.St.J. Russell
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  8. A.B. Fedotov
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  9. V.S. Pivtsov
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  10. A.A. Podshivalov
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  11. A.M. Zheltikov
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Additional information

Received: 23 October 2001 / Accepted: 16 January 2002 / Published online: 14 March 2002

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Akimov, D., Ivanov, A., Alfimov, M. et al. Two-octave spectral broadening of subnanojoule Cr:forsterite femtosecond laser pulses in tapered fibers . Appl Phys B 74, 307–311 (2002). https://doi.org/10.1007/s003400200811

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  • DOI: https://doi.org/10.1007/s003400200811

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