Efficient laser operation in cleaved single-crystal plates of Yb:KY(MoO4)2: A novel molybdate compound

Anna Volokitina; Pavel Loiko; Anatoly Pavlyuk; Josep Maria Serres; Sami Slimi; Ezzedine Ben Salem; Rosa Maria Solé; Mikhail Baranov; Esrom Kifle; Magdalena Aguiló; Francesc Díaz; Uwe Griebner; Valentin Petrov; Xavier Mateos

doi:10.1117/12.2555416

1 April 2020 Efficient laser operation in cleaved single-crystal plates of Yb:KY(MoO₄)₂: a novel molybdate compound

Anna Volokitina, Pavel Loiko, Anatoly Pavlyuk, Josep Maria Serres, Sami Slimi, Ezzedine Ben Salem, Rosa Maria Solé, Mikhail Baranov, Esrom Kifle, Magdalena Aguiló, Francesc Díaz, Uwe Griebner, Valentin Petrov, Xavier Mateos

Author Affiliations +

Proceedings Volume 11357, Fiber Lasers and Glass Photonics: Materials through Applications II; 113571T (2020) https://doi.org/10.1117/12.2555416
Event: SPIE Photonics Europe, 2020, Online Only

Abstract

We report on the first laser operation of a novel double molybdate compound, Yb:KY(MoO₄)₂. Single-crystals were grown by the Low Temperature Gradient (LTG) Czochralski method. The crystal structure (orthorhombic, sp. gr. Pbna – D¹⁴_2h) was refined with the Rietveld method. Yb:KY(MoO₄)₂ exhibits a layered structure leading to a strong optical anisotropy and a perfect cleavage along the (100) plane. The stimulated-emission cross-section for Yb³⁺ ions is 3.70×10^-20 cm² at 1008.0 nm and the emission bandwidth is 37 nm (for light polarization E || b). Continuous-wave laser operation is achieved in a 3 at.% Yb:KY(MoO₄)₂ crystal plate (thickness: 286 μm) under diode pumping. The microchip laser generated a maximum output power of 0.81 W at 1021-1044 nm with a slope efficiency of 76.4% and linear polarization. Yb:KY(MoO₄)₂ crystal films / plates are attractive for sub-ns passively Q-switched microchip lasers and thin-disk lasers.

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Anna Volokitina, Pavel Loiko, Anatoly Pavlyuk, Josep Maria Serres, Sami Slimi, Ezzedine Ben Salem, Rosa Maria Solé, Mikhail Baranov, Esrom Kifle, Magdalena Aguiló, Francesc Díaz, Uwe Griebner, Valentin Petrov, and Xavier Mateos "Efficient laser operation in cleaved single-crystal plates of Yb:KY(MoO₄)₂: a novel molybdate compound", Proc. SPIE 11357, Fiber Lasers and Glass Photonics: Materials through Applications II, 113571T (1 April 2020); https://doi.org/10.1117/12.2555416

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