Spectroscopy and high-power laser operation of a monoclinic Yb3+:MgWO4 crystal

Monoclinic (wolframite-type) monotungstate crystals are promising for rare-earth doping. We report polarized room- and low-temperature spectroscopy and efficient high-power laser operation of such a Yb3+:MgWO4 crystal featuring high stimulated emission cross section (ðoeŽSE=6.2×10−20cm2 at 1056.7 n...

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Veröffentlicht in:Optics letters 2020-04, Vol.45 (7), p.1770-1773
Hauptverfasser: Loiko, Pavel, Chen, Mengting, Serres, Josep Maria, Aguiló, Magdalena, Díaz, Francesc, Lin, Haifeng, Zhang, Ge, Zhang, Lizhen, Lin, Zhoubin, Camy, Patrice, Dai, Shi-Bo, Chen, Zhenqiang, Zhao, Yongguang, Wang, Li, Chen, Weidong, Griebner, Uwe, Petrov, Valentin, Mateos, Xavier
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Sprache:eng
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Zusammenfassung:Monoclinic (wolframite-type) monotungstate crystals are promising for rare-earth doping. We report polarized room- and low-temperature spectroscopy and efficient high-power laser operation of such a Yb3+:MgWO4 crystal featuring high stimulated emission cross section (ðoeŽSE=6.2×10−20cm2 at 1056.7 nm for light polarization E||ð'ð'š), large Stark splitting of the ground state (765cm−1), large gain bandwidth (26.1 nm for E||ð'ð'"), and strong Raman response (most intense mode at 916cm−1). A diode-pumped Yb3+:MgWO4 laser generated 18.2 W at ∼1056nm with a slope efficiency of ∼89% and a linearly polarized laser output.
ISSN:0146-9592
1539-4794
DOI:10.1364/OL.389627