Advanced Materials

Giant Optical Gain in a Rare-Earth-Ion-Doped Microstructure

Authors

  • Dimitri Geskus,

    1. Integrated Optical Micro Systems Group, MESA+ Institute for Nanotechnology, University of Twente, P.O. Box 217, Enschede, 7500 AE, The Netherlands
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  • Shanmugam Aravazhi,

    1. Integrated Optical Micro Systems Group, MESA+ Institute for Nanotechnology, University of Twente, P.O. Box 217, Enschede, 7500 AE, The Netherlands
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  • Sonia M. García-Blanco,

    1. Integrated Optical Micro Systems Group, MESA+ Institute for Nanotechnology, University of Twente, P.O. Box 217, Enschede, 7500 AE, The Netherlands
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  • Markus Pollnau

    Corresponding author
    1. Integrated Optical Micro Systems Group, MESA+ Institute for Nanotechnology, University of Twente, P.O. Box 217, Enschede, 7500 AE, The Netherlands
    • Integrated Optical Micro Systems Group, MESA+ Institute for Nanotechnology, University of Twente, P.O. Box 217, Enschede, 7500 AE, The Netherlands.
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Abstract

Modal gain per unit length versus launched pump power is predicted and measured in a 47.5 at.% Yb3+-doped potassium double tungstate channel waveguide. The highest measured gain exceeds values previously reported for rare-earth-ion-doped materials by two orders of magnitude.

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