The prospects for Yb- and Nd-doped tungstate microchip lasers

Savitski, V. G. and Birch, R. B. and Fraczek, E. and Kemp, A. J. and Loiko, P. A. and Yumashev, K. V. and Kuleshov, N. V. and Pavlyuk, A. A. (2013) The prospects for Yb- and Nd-doped tungstate microchip lasers. In: 2013 Conference on Lasers & Electro-Optics Europe & International Quantum Electronics Conference CLEO EUROPE/IQEC. IEEE, Piscataway, N.J.. ISBN 9781479905942

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    Abstract

    Potassium gadolinium and yttrium tungstates doped with trivalent Nd, Yb or Tm ions are widely used crystals for efficient diode-pumped lasers. They are usually oriented along the b crystallographic axis, which is also the N p axis of optical indicatrix. The Np-cut is characterized by a strong thermal lens with opposing signs along Nm and N g [1]. This is unsuited to microchip lasers which require a positive thermal lens for a stable cavity. Therefore, a detailed investigation of thermo-optic effects and microchip laser potential of other crystallographic orientations in tungstate crystals is of interest.