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Continuous-wave and Q-switched Tm-doped KY(WO<sub>4</sub>)<sub>2</sub> planar waveguide laser at 1.84 microns

By Western Bolaños, Joan J. Carvajal, Xavier Mateos, Eugenio Cantelar, Ginés Lifante, Ulwe Griebner, Valentin Petrov, Vladimir L. Panyutin, Ganapathy S. Murugan, James S. Wilkinson, Magdalena Aguiló and Francesc Díaz

Abstract

High-quality monoclinic planar waveguide crystals of Tm-doped KY(WO<sub>4</sub>)<sub>2</sub> codoped with Gd<sup>3+</sup> and Lu<sup>3+</sup> were grown by liquid-phase epitaxy. For the first time, planar waveguide lasing was demonstrated in a monolithic cavity in the 2 µm spectral range. The laser was operated in the Q-switched mode using a Cr<sup>2+</sup>:ZnSe crystal as saturable absorber and in the continuous-wave regimes. The Q-switched planar waveguide laser delivered pulse energies up to 120 nJ at a repetition rate of 7 kHz.<br/

Topics: QC, TK
Year: 2011
OAI identifier: oai:eprints.soton.ac.uk:180805
Provided by: e-Prints Soton
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