Monoclinic Yb3+,Li+:ZnWO4 - efficient broadly emitting laser material

Ghassen Zin Elabedine; Kirill Subbotin; Pavel Loiko; Yulia Zimina; Sergei Pavlov; Anatoly Titov; Patrice Camy; Alain Braud; Rosa Maria Solé; Magdalena Aguiló; Francesc Díaz; Weidong Chen; Xavier Mateos; Valentin Petrov

doi:10.1117/12.3002431

12 March 2024 Monoclinic Yb³⁺,Li⁺:ZnWO₄ - efficient broadly emitting laser material

Ghassen Zin Elabedine, Kirill Subbotin, Pavel Loiko, Yulia Zimina, Sergei Pavlov, Anatoly Titov, Patrice Camy, Alain Braud, Rosa Maria Solé, Magdalena Aguiló, Francesc Díaz, Weidong Chen, Xavier Mateos, Valentin Petrov

Author Affiliations +

Proceedings Volume 12864, Solid State Lasers XXXIII: Technology and Devices; 128640K (2024) https://doi.org/10.1117/12.3002431
Event: SPIE LASE, 2024, San Francisco, California, United States

Abstract

Yb³⁺,Li⁺ -codoped monoclinic zinc tungstate (ZnWO₄) crystals with optimized Li⁺ content providing efficient local charge compensation were grown by the Czochralski method. Heavy Li⁺ codoping makes the Yb³⁺-doped ZnWO₄ crystals less prone to cracking, improves the Yb³⁺ segregation, reduces the melting point and induces inhomogeneous spectral line broadening. The polarized absorption and stimulated-emission cross-sections of Yb³⁺ in ZnWO4 were determined. The maximum stimulated-emission cross-section σ_SE is 2.94×10^-20 cm² at 1055.5 nm corresponding to an emission bandwidth of 12.2 nm for light polarization E || N_p. The formation of Yb³⁺ optical centers in singly Yb³⁺-doped and Yb³⁺,Li⁺ -codoped zinc monotungstate crystals is revealed by low-temperature spectroscopy. The Yb,Li:ZnWO₄ laser pumped by a commercial 976-nm Yb-fiber laser generated 2.41 W at approximately 1.06 μm with a slope efficiency of 76.4%, a laser threshold of 143 mW and linear polarization.

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(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Ghassen Zin Elabedine, Kirill Subbotin, Pavel Loiko, Yulia Zimina, Sergei Pavlov, Anatoly Titov, Patrice Camy, Alain Braud, Rosa Maria Solé, Magdalena Aguiló, Francesc Díaz, Weidong Chen, Xavier Mateos, and Valentin Petrov "Monoclinic Yb³⁺,Li⁺:ZnWO₄ - efficient broadly emitting laser material", Proc. SPIE 12864, Solid State Lasers XXXIII: Technology and Devices, 128640K (12 March 2024); https://doi.org/10.1117/12.3002431

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