Concentration quenching of luminescence lifetime in ytterbium-doped potassium double tungstate waveguide amplifiers

Sergio Andrés Vázquez-Córdova, Yean Sheng Yong, S. Aravazhi, Kerstin Worhoff, Markus Pollnau

    Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademic


    Integrated optical amplifiers employing ytterbium-doped potassium double tungstates exhibit an ultra-high peak gain exceeding 1000 dB/cm, in addition to a broad gain of up to 150 dB/cm over a 55-nm wavelength range. Here we report a study of the luminescence lifetime in samples spanning a broad range of dopant concentrations (1.2−57.5 at.%). By use of the pinhole method, elongation of the luminescence lifetime due to radiation trapping is avoided, providing a more accurate analysis of concentration quenching of the luminescence lifetime, which directly influences the waveguide amplifier performance and can, in principle, inhibit scaling of the gain with increasing dopant concentration.
    Original languageUndefined
    Title of host publication17th Annual Symposium of the IEEE Photonics Benelux Chapter
    Place of PublicationMons, Belgium
    PublisherUniversity of Mons
    Number of pages4
    ISBN (Print)978-2-8052-0184-4
    Publication statusPublished - 29 Nov 2012
    Event17th Annual Symposium of the IEEE Photonics Benelux Chapter 2012 - Mons, Belgium
    Duration: 29 Nov 201230 Nov 2012
    Conference number: 17

    Publication series

    PublisherUniversity of Mons, Faculty of Engineering


    Conference17th Annual Symposium of the IEEE Photonics Benelux Chapter 2012
    Internet address


    • EWI-22656
    • IR-82550
    • METIS-296166
    • IOMS-APD: Active Photonic Devices

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