Self-slowdown and -advancement of fs pulses in a quantum-dot semiconductor optical amplifier

Mike van der Poel, Jesper Mørk, Jørn Märcher Hvam

    Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review


    We demonstrate changes in the propagation time of 180 femtosecond pulses in a quantum-dot semiconductor optical amplifier as function of pulse input power and bias current. The results interpreted as a result of pulse reshaping by gain saturation but are also analogous to coherent population oscillations. Relative pulse delays (i.e. pulse time delay to pulse FWHM ratio) up to 40% and relative advancements up to 15% are observed when the amplifier is biased at zero current and at currents well above transparency, respectively. Under gain conditions, no pulsedistortion is seen while a considerable pulse distortion occurs at zero bias.
    Original languageEnglish
    Title of host publicationNanostructures: Physics and Technology - 13th International Symposium, Proceedings
    Place of PublicationSt. Petersburg, Russia
    PublisherIoffe Physico-Technical Institute
    Publication date2005
    ISBN (Print)59-36-34017-1
    Publication statusPublished - 2005
    EventNanostructures: Physics and Technology - St. Petersburg, Russia, Russian Federation
    Duration: 20 Jun 200525 Jun 2005
    Conference number: 13th International Symposium


    ConferenceNanostructures: Physics and Technology
    Number13th International Symposium
    Country/TerritoryRussian Federation
    CitySt. Petersburg, Russia


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