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Crystal growth, spectroscopy, and highly efficient laser operation of thulium-doped Lu2O3 around 2 μm

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Abstract

We report on the crystal growth, spectroscopic investigations, and laser experiments of thulium-doped Lu2O3. Crystals with dopant concentrations between 0.2 at.% and 10 at.% were grown by the Nacken–Kyropoulos and the Heat-Exchanger Method. Absorption and emission spectra are presented, as well as the lifetimes of the energy levels involved in the laser process. The laser experiments were carried out using a Ti:sapphire laser emitting at 796 nm as the pump source, achieving a maximum slope efficiency of 68% with respect to the absorbed pump power and a maximum output power of 1.5 W. A continuous tuning range from 1900 nm to 2110 nm was obtained.

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Authors and Affiliations

  1. Institute of Laser-Physics, Luruper Chaussee 149, 22761, Hamburg, Germany

    P. Koopmann, R. Peters, K. Petermann & G. Huber

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  1. P. Koopmann
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  2. R. Peters
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  3. K. Petermann
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  4. G. Huber
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Correspondence to P. Koopmann.

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Koopmann, P., Peters, R., Petermann, K. et al. Crystal growth, spectroscopy, and highly efficient laser operation of thulium-doped Lu2O3 around 2 μm. Appl. Phys. B 102, 19–24 (2011). https://doi.org/10.1007/s00340-010-4361-7

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  • DOI: https://doi.org/10.1007/s00340-010-4361-7

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