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Compact fibre-laser-pumped Ho:YLF oscillator–amplifier system

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Abstract

We developed a compact Ho:YLF oscillator–amplifier system in a novel setup to utilise the unpolarised pump power from a fibre laser efficiently, and produced 21.3 mJ at 1 kHz, with an M 2 better than 1.1. The amplified energies agreed well with the predicted values from a two dimensional rotational symmetric amplifier model that we developed. The model considers upconversion losses and ground-state depletion, as well as the spatial distribution of the pump beam.

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Authors and Affiliations

  1. National Laser Centre, Council for Scientific and Industrial Research, P.O. Box 395, Pretoria, 0001, South Africa

    W. Koen, C. Bollig, H. Strauss, C. Jacobs & M. J. D. Esser

  2. University of KwaZulu-Natal, Durban, 4041, South Africa

    W. Koen

  3. University of Stellenbosch, Private Bag X1, Matieland, 7602, South Africa

    H. Strauss & C. Jacobs

  4. French–German Research Institute, ISL, 5 rue du Général Cassagnou, 68301, Saint-Louis, France

    M. Schellhorn

Authors
  1. W. Koen
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  2. C. Bollig
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  3. H. Strauss
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  4. M. Schellhorn
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  5. C. Jacobs
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  6. M. J. D. Esser
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Correspondence to W. Koen.

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Koen, W., Bollig, C., Strauss, H. et al. Compact fibre-laser-pumped Ho:YLF oscillator–amplifier system. Appl. Phys. B 99, 101–106 (2010). https://doi.org/10.1007/s00340-009-3819-y

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  • DOI: https://doi.org/10.1007/s00340-009-3819-y

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