Spatiotemporal pulse shaping is used to transform a single femtosecond excitation pulse into a spatially and temporally tailored output which may take the form of many separate beams, each of which has an independently specified time-dependent waveform. Through impulsive stimulated Raman scattering, the separate beams and pulses excite coherent phonon-polaritons and manipulate them as they propagate within the crystalline sample at light-like speeds. Variably delayed probe pulses are expanded to a large size within the sample and projected onto a CCD camera to record real-space images of the propagating responses. The images are used to guide the spatiotemporal pulse shaping and coherent control processes.


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    Title :

    Terahertz polaritonics: spatiotemporal imaging, spatiotemporal femtosecond pulse shaping, and spatiotemporal coherent control


    Contributors:


    Publication date :

    2001-01-01


    Size :

    174694 byte





    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English




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