Improved-index-contrast KY(WO4)2:Gd, Lu, Yb epitaxial waveguides suitable for highly efficient waveguide lasing

S. Aravazhi, D. Geskus, Kerstin Worhoff, Markus Pollnau

    Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

    Abstract

    High-quality crystalline KY(WO4)2:Yb3+ layers co-doped with large concentrations of optically inert Gd3+ and Lu3+ ions were grown by vertical liquid phase epitaxy. The codoping enhances the refractive index contrast between the active layer and the undoped KY(WO4)2 substrate to ~7.5×10-3. A K2W2O7 solvent was employed for the growth of layers onto undoped (010)-oriented KYW substrates. Single crystalline layers of thickness 5-10 µm were grown at low level of supersaturation and growth temperatures of 920-923°C. The layer quality was studied by X-ray diffraction. The composition of the grown layers was determined by laser-ablation inductively-coupled-plasma mass spectrometry (LA-ICP-MS). Planar waveguide lasers with low laser threshold of 18 mW, record-high slope efficiency of 82.3%, and maximum output power of 195 mW have been achieved.
    Original languageUndefined
    Title of host publicationProceedings of the 2009 Annual Symposium of the IEEE Photonics Benelux Chapter
    EditorsStefano Beri, Philippe Tassin, Gordon Craggs, Xaveer Leijtens, Jan Dankaert
    PublisherVUBPress Brussels University Press
    Pages133-136
    Number of pages4
    ISBN (Print)978-90-5487-650-2
    Publication statusPublished - 5 Nov 2009
    Event14th Annual Symposium of the IEEE Photonics Benelux Chapter 2009 - Brussels, Belgium
    Duration: 5 Nov 20096 Nov 2009
    Conference number: 14

    Publication series

    Name
    PublisherVUBPress Brussels University Press

    Conference

    Conference14th Annual Symposium of the IEEE Photonics Benelux Chapter 2009
    CountryBelgium
    CityBrussels
    Period5/11/096/11/09

    Keywords

    • IR-69943
    • METIS-265796
    • Crystal growth
    • epitaxial
    • IOMS-APD: Active Photonic Devices
    • LPE
    • KYW
    • EWI-17451
    • Laser

    Cite this

    Aravazhi, S., Geskus, D., Worhoff, K., & Pollnau, M. (2009). Improved-index-contrast KY(WO4)2:Gd, Lu, Yb epitaxial waveguides suitable for highly efficient waveguide lasing. In S. Beri, P. Tassin, G. Craggs, X. Leijtens, & J. Dankaert (Eds.), Proceedings of the 2009 Annual Symposium of the IEEE Photonics Benelux Chapter (pp. 133-136). VUBPress Brussels University Press.
    Aravazhi, S. ; Geskus, D. ; Worhoff, Kerstin ; Pollnau, Markus. / Improved-index-contrast KY(WO4)2:Gd, Lu, Yb epitaxial waveguides suitable for highly efficient waveguide lasing. Proceedings of the 2009 Annual Symposium of the IEEE Photonics Benelux Chapter. editor / Stefano Beri ; Philippe Tassin ; Gordon Craggs ; Xaveer Leijtens ; Jan Dankaert. VUBPress Brussels University Press, 2009. pp. 133-136
    @inproceedings{8d6e6b674580456c8cc85a4decd27ed4,
    title = "Improved-index-contrast KY(WO4)2:Gd, Lu, Yb epitaxial waveguides suitable for highly efficient waveguide lasing",
    abstract = "High-quality crystalline KY(WO4)2:Yb3+ layers co-doped with large concentrations of optically inert Gd3+ and Lu3+ ions were grown by vertical liquid phase epitaxy. The codoping enhances the refractive index contrast between the active layer and the undoped KY(WO4)2 substrate to ~7.5×10-3. A K2W2O7 solvent was employed for the growth of layers onto undoped (010)-oriented KYW substrates. Single crystalline layers of thickness 5-10 µm were grown at low level of supersaturation and growth temperatures of 920-923°C. The layer quality was studied by X-ray diffraction. The composition of the grown layers was determined by laser-ablation inductively-coupled-plasma mass spectrometry (LA-ICP-MS). Planar waveguide lasers with low laser threshold of 18 mW, record-high slope efficiency of 82.3{\%}, and maximum output power of 195 mW have been achieved.",
    keywords = "IR-69943, METIS-265796, Crystal growth, epitaxial, IOMS-APD: Active Photonic Devices, LPE, KYW, EWI-17451, Laser",
    author = "S. Aravazhi and D. Geskus and Kerstin Worhoff and Markus Pollnau",
    year = "2009",
    month = "11",
    day = "5",
    language = "Undefined",
    isbn = "978-90-5487-650-2",
    publisher = "VUBPress Brussels University Press",
    pages = "133--136",
    editor = "Stefano Beri and Philippe Tassin and Gordon Craggs and Xaveer Leijtens and Jan Dankaert",
    booktitle = "Proceedings of the 2009 Annual Symposium of the IEEE Photonics Benelux Chapter",

    }

    Aravazhi, S, Geskus, D, Worhoff, K & Pollnau, M 2009, Improved-index-contrast KY(WO4)2:Gd, Lu, Yb epitaxial waveguides suitable for highly efficient waveguide lasing. in S Beri, P Tassin, G Craggs, X Leijtens & J Dankaert (eds), Proceedings of the 2009 Annual Symposium of the IEEE Photonics Benelux Chapter. VUBPress Brussels University Press, pp. 133-136, 14th Annual Symposium of the IEEE Photonics Benelux Chapter 2009, Brussels, Belgium, 5/11/09.

    Improved-index-contrast KY(WO4)2:Gd, Lu, Yb epitaxial waveguides suitable for highly efficient waveguide lasing. / Aravazhi, S.; Geskus, D.; Worhoff, Kerstin; Pollnau, Markus.

    Proceedings of the 2009 Annual Symposium of the IEEE Photonics Benelux Chapter. ed. / Stefano Beri; Philippe Tassin; Gordon Craggs; Xaveer Leijtens; Jan Dankaert. VUBPress Brussels University Press, 2009. p. 133-136.

    Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

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    AU - Aravazhi, S.

    AU - Geskus, D.

    AU - Worhoff, Kerstin

    AU - Pollnau, Markus

    PY - 2009/11/5

    Y1 - 2009/11/5

    N2 - High-quality crystalline KY(WO4)2:Yb3+ layers co-doped with large concentrations of optically inert Gd3+ and Lu3+ ions were grown by vertical liquid phase epitaxy. The codoping enhances the refractive index contrast between the active layer and the undoped KY(WO4)2 substrate to ~7.5×10-3. A K2W2O7 solvent was employed for the growth of layers onto undoped (010)-oriented KYW substrates. Single crystalline layers of thickness 5-10 µm were grown at low level of supersaturation and growth temperatures of 920-923°C. The layer quality was studied by X-ray diffraction. The composition of the grown layers was determined by laser-ablation inductively-coupled-plasma mass spectrometry (LA-ICP-MS). Planar waveguide lasers with low laser threshold of 18 mW, record-high slope efficiency of 82.3%, and maximum output power of 195 mW have been achieved.

    AB - High-quality crystalline KY(WO4)2:Yb3+ layers co-doped with large concentrations of optically inert Gd3+ and Lu3+ ions were grown by vertical liquid phase epitaxy. The codoping enhances the refractive index contrast between the active layer and the undoped KY(WO4)2 substrate to ~7.5×10-3. A K2W2O7 solvent was employed for the growth of layers onto undoped (010)-oriented KYW substrates. Single crystalline layers of thickness 5-10 µm were grown at low level of supersaturation and growth temperatures of 920-923°C. The layer quality was studied by X-ray diffraction. The composition of the grown layers was determined by laser-ablation inductively-coupled-plasma mass spectrometry (LA-ICP-MS). Planar waveguide lasers with low laser threshold of 18 mW, record-high slope efficiency of 82.3%, and maximum output power of 195 mW have been achieved.

    KW - IR-69943

    KW - METIS-265796

    KW - Crystal growth

    KW - epitaxial

    KW - IOMS-APD: Active Photonic Devices

    KW - LPE

    KW - KYW

    KW - EWI-17451

    KW - Laser

    M3 - Conference contribution

    SN - 978-90-5487-650-2

    SP - 133

    EP - 136

    BT - Proceedings of the 2009 Annual Symposium of the IEEE Photonics Benelux Chapter

    A2 - Beri, Stefano

    A2 - Tassin, Philippe

    A2 - Craggs, Gordon

    A2 - Leijtens, Xaveer

    A2 - Dankaert, Jan

    PB - VUBPress Brussels University Press

    ER -

    Aravazhi S, Geskus D, Worhoff K, Pollnau M. Improved-index-contrast KY(WO4)2:Gd, Lu, Yb epitaxial waveguides suitable for highly efficient waveguide lasing. In Beri S, Tassin P, Craggs G, Leijtens X, Dankaert J, editors, Proceedings of the 2009 Annual Symposium of the IEEE Photonics Benelux Chapter. VUBPress Brussels University Press. 2009. p. 133-136