Femtosecond time-resolved broadband electronic sum frequency generation for the investigation of electron and exciton dynamics
نویسنده
چکیده
Time-resolved sum-frequency generation is an established tool to investigate ultrafast vibrational dynamics with surface and interface specificity. We present an extension of the technique to the regime of electronic transitions based on a compressed white light continuum. It is used to probe the non-equilibrium dynamics of excitonic resonances in the non-centrosymmetric oxide ZnO, where we demonstrate that we can probe transient changes of the electronic sum frequency generation signal as small as 0.6%.
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تاریخ انتشار 2016