We have developed a two color pump-probe ellipsometry for the measurement of the optical nonlinear phase shift in a waveguide with quantum dot (QD) core layers. The key point of the method is to utilize the large polarization-dependent property in the optical nonlinearity arising from a flat-dome-like shape of the QDs. In this paper we report the time resolved behavior of the nonlinear response in the QD waveguides obtained by this method. Optical phase shift of more than /spl pi//2 rad was obtained by a pumping of 30 pJ//spl mu/m/sup 2/. Delay time dependence of the phase shift is discussed in connection with the carrier dynamics.


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    Titel :

    Time-resolved optical nonlinearity measurement by a two color pump-probe ellipsometry in InAs quantum dot waveguide


    Beteiligte:
    Kanamoto, K. (Autor:in) / Nakamura, H. (Autor:in) / Nakamura, Y. (Autor:in) / Sugimoto, Y. (Autor:in) / Asakawa, K. (Autor:in) / Ishikawa, H. (Autor:in)


    Erscheinungsdatum :

    01.01.2003


    Format / Umfang :

    115284 byte





    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch





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