Summary form only given. We present a ultrasensitive method for measuring the ultrafast optical response of a sample with respect to its amplitude and phase. Combining interferometric cross correlation, a wavemeter and a numerical lock-in technique, the method is distinguished by its dynamic range (7 orders of magnitude in the intensity) and phase resolution (/spl Delta//spl Phi//2/spl pi/=1/50). Time resolution depends on residual dispersion of the set-up but is limited to /spl ap/40 fs by the width of the input pulses. We demonstrate, as an example, high precision measurements of nonlinear 1s-exciton-polariton propagation through GaAs.


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    Title :

    Interferometric cross correlation with a numerical lock-in: Nonlinear polariton pulse propagation through GaAs


    Contributors:
    Nagerl, J.S. (author) / Stabenau, B. (author) / Bohne, G. (author) / Ulbrich, R.G. (author)


    Publication date :

    1999-01-01


    Size :

    152242 byte




    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



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