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Optical spectroscopy and efficient continuous-wave operation near 2 μm for a Tm, Ho:KYW laser crystal

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Abstract

The growth, spectroscopy and lasing performance of a novel Tm, Ho:KY(WO4)2 crystal are reported. The peak emission cross-section of the Ho3+ 5I7→5I8 transition and lifetime of the 5I7 excited state were determined to be 4.8×10−20 cm2 and 1.8 ms, respectively, in a spectral range at around 2060 nm. Using a Ti:sapphire laser as a pump source at 802 nm, a maximum slope efficiency of up to 44% has been achieved with a corresponding output power of 460 mW at 2056 nm during continuous-wave operation of a Tm, Ho:KY(WO4)2 laser at room temperature. A tuning range of 1890–2080 nm has been demonstrated.

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Authors and Affiliations

  1. School of Physics and Astronomy, University of St. Andrews, St. Andrews, KY16 9SS, UK

    A. A. Lagatsky, F. Fusari, C. T. A. Brown & W. Sibbett

  2. Institute for Optical Materials and Technologies, Belarus National Technical University, 65 Nezavisimosti Ave., Minsk, 220013, Belarus

    S. V. Kurilchik, V. E. Kisel, A. S. Yasukevich & N. V. Kuleshov

  3. Institute of Inorganic Chemistry, Siberian Branch of Russian Academy of Sciences, 3 Lavrentyev Ave., Novosibirsk, 630090, Russia

    A. A. Pavlyuk

Authors
  1. A. A. Lagatsky
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  2. F. Fusari
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  3. S. V. Kurilchik
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  4. V. E. Kisel
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  5. A. S. Yasukevich
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  6. N. V. Kuleshov
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  7. A. A. Pavlyuk
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  8. C. T. A. Brown
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  9. W. Sibbett
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Correspondence to A. A. Lagatsky.

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Lagatsky, A.A., Fusari, F., Kurilchik, S.V. et al. Optical spectroscopy and efficient continuous-wave operation near 2 μm for a Tm, Ho:KYW laser crystal. Appl. Phys. B 97, 321–326 (2009). https://doi.org/10.1007/s00340-009-3698-2

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  • DOI: https://doi.org/10.1007/s00340-009-3698-2

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