Phase dynamics of InAs/GaAs quantum dot semiconductor optical amplifiers

I. O'Driscoll, T. Piwonski, J. Houlihan, G. Huyet, R. J. Manning, B. Corbett

    Research output: Contribution to journalArticlepeer-review

    Abstract

    The gain and phase dynamics of InAs/GaAs quantum dot amplifiers are studied using single and two-color heterodyne pump probe spectroscopy. The relaxation of the wetting layer carrier density is shown to have a strong effect on the phase dynamics of both ground and excited state transients, while having a much weaker effect on the gain dynamics. In addition, the dynamical alpha factor may also display a constant value after an initial transient. Such behavior is strongly encouraging for reduced pattern effect operation in high speed optical networks. (c) 2007 American Institute of Physics.
    Original languageEnglish
    Pages (from-to)3
    JournalApplied Physics Letters
    Volume91
    Issue number26
    Publication statusPublished - 2007

    Keywords

    • LINEWIDTH ENHANCEMENT FACTOR LASERS ALPHA GAIN

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