Applied Physics B

, Volume 102, Issue 1, pp 19–24 | Cite as

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

Article

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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Copyright information

© Springer-Verlag 2011

Authors and Affiliations

  • P. Koopmann
    • 1
  • R. Peters
    • 1
  • K. Petermann
    • 1
  • G. Huber
    • 1
  1. 1.Institute of Laser-PhysicsHamburgGermany

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