Slow light in a semiconductor waveguide at gigahertz frequencies

Jesper Mørk, Rasmus Kjær, Mike van der Poel, Kresten Yvind

    Research output: Contribution to journalJournal articleResearchpeer-review


    We experimentally demonstrate slow-down of light by a factor of three in a 100 µm long semiconductor waveguide at room temperature and at a record-high frequency of 16.7 GHz. It is shown that the group velocity can be controlled all-optically as well as through an applied bias voltage. A semi-analytical model based on the effect of coherent population oscillations and taking into account propagation effects is derived and is shown to well account for the experimental results. It is shown that the carrier lifetime limits the maximum achievable delay. Based on the general model we analyze fundamental limitations in the application of light slowdown due to coherent population oscillations.
    Original languageEnglish
    JournalOptics Express
    Issue number20
    Pages (from-to)8136
    Publication statusPublished - 2005


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