Summary form only given. When intersubband transitions are excited in semiconductor heterostructures, the charge carriers follow the driving field in an oscillatory motion. THz time-domain spectroscopy is an attractive tool to study the polarization following an exciting THz pulse. A time resolution which is shorter than the oscillation time of the driving field enables the observation of the coherent electron motion for the first time. The investigated GaAs/AlGaAs heterostructures are modulation doped parabolic quantum wells.


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    Title :

    Excitation of intersubband transitions by THz pulses


    Contributors:


    Publication date :

    1999-01-01


    Size :

    262904 byte




    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



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