Electrical versus optical pumping of quantum dot amplifiers

Tommy Winther Berg, Svend Bischoff, Jesper Mørk

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    The influence of the pumping mechanism for the dynamical properties of quantum dot amplifiers is investigated for 10, 40 and 160 GHz signals. A fast response is predicted in the case of optical pumping in the wetting layer (WL). The combination of fast relaxation and capture times and the presence of a reservoir of carriers in the WL opens up for the possibility of ultrafast gain recovery in QD devices. The strength of optical contra electrical pumping is that it reduces the bottleneck effect of a slow WL. Optical pumping thus allows significant improvement of the dynamical properties of QD devices.
    Original languageEnglish
    Title of host publicationProceedings 27th European Conference on Optical Communication
    Publication date2001
    ISBN (Print)07-80-36705-7
    Publication statusPublished - 2001
    Event27th European Conference on Optical Communication - Amsterdam, Netherlands
    Duration: 30 Sept 20014 Oct 2001
    Conference number: 27


    Conference27th European Conference on Optical Communication

    Bibliographical note

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