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We present a novel ultrafast pump-probe system, allowing for a drastic reduction in acquisition time, typically a few tens of minutes for 20,000 frames. We present acoustic waves and heat transfer measurements in nanometric layers.
Ambipolar diffusion coefficient in silicon-on-insulator is measured as functions of lattice temperature and carrier density by directly imaging the carrier dynamics by using a high resolution optical pump-probe technique based on free carrier absorption.
New techniques for time-domain ultrafast vibrational spectroscopy through direct time-dependent phase detection of coherently excited vibrations via spectral interferometry. Three variants with advantages for spectral resolution, sensitivity and speed are presented.
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