Adeline Bonvalet

TL;DR: The experiment yields simultaneously the femtosecond dynamics of both diagonal and off-diagonal matrix elements of the density operator and information on the relaxation of intersubband coherence in quantum wells.

TL;DR: A new scheme of Fourier-transform spectroscopy in the mid and the far infrared is developed, which relies on an interferometer in the visible or the near infrared, providing a sequence of two femtosecond pulses, which in turn generate a sequences of infrared pulses.

TL;DR: It is observed that narrow spectral features in mid-infrared spectra obtained by chirped-pulse up-conversion are strongly distorted by cross-phase modulation between the mid-Infrared field and the chirping pulse.

TL;DR: A method of asynchronous optical sampling based on free-running lasers with no requirement on the repetition rates is presented, based on the a posteriori determination of the delay between each pair of pulses.

TL;DR: In this paper, the authors review different methods for characterizing mid-infrared femtosecond pulses, including linear methods such as electro-optic sampling, time-and frequency-domain interferometry and nonlinear self-referenced methods, such as frequency-resolved optical gating (FROG) and spectral phase interferometers for direct electric field reconstruction (SPIDER).