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Generation of a spectrally asymmetric third harmonic with unamplified 30-fs Cr:forsterite laser pulses in a tapered fiber

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Abstract.

Unamplified subnanojoule 30-fs pulses of Cr:forsterite laser radiation are shown to generate the third-harmonic signal in a tapered fiber. Analysis of the dispersion properties of a tapered fiber indicates the possibility of phase matching third-harmonic generation in higher-order waveguide modes. When the pump and third-harmonic pulses are group-velocity-mismatched, optimal phase matching is achieved for frequency components spectrally offset from the central frequency of the pump pulse, which gives rise to an asymmetry in the spectrum of the third harmonic.

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Authors and Affiliations

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

    D.A. Akimov, A.N. Naumov, O.A. Kolevatova, 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. Department of Physics, University of Bath, Bath BA2 7AY, UK, , , , , , UK

    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. A.N. Naumov
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  4. O.A. Kolevatova
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  5. M.V. Alfimov
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  6. T.A. Birks
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  7. W.J. Wadsworth
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  8. P.St.J. Russell
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  9. A.A. Podshivalov
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  10. A.M. Zheltikov
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Additional information

Received: 30 October 2002 / Published online: 14 May 2003

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ID="*"Corresponding author. Fax: +7-95/9350-209, E-mail: ivanov@photonics.ru

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Akimov, D., Ivanov, A., Naumov, A. et al. Generation of a spectrally asymmetric third harmonic with unamplified 30-fs Cr:forsterite laser pulses in a tapered fiber . Appl Phys B 76, 515–519 (2003). https://doi.org/10.1007/s00340-002-1080-8

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  • DOI: https://doi.org/10.1007/s00340-002-1080-8

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