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 (ðoeSE=6.2×10−20cm2 at 1056.7 n...
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Veröffentlicht in: | Optics letters 2020-04, Vol.45 (7), p.1770-1773 |
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Hauptverfasser: | , , , , , , , , , , , , , , , , , |
Format: | Artikel |
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 (ðoeSE=6.2×10−20cm2 at 1056.7 nm for light polarization E||ð'ð'), 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. |
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ISSN: | 0146-9592 1539-4794 |
DOI: | 10.1364/OL.389627 |