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Accueil > Publications > Publications par année > Année 2002

Realization of a Time-Domain Fresnel Lens with Coherent Control

Perturbative chirped pulse excitation leads to oscillations of the excited state amplitude. These coherent transients are governed by interferences between resonant and off-resonant contributions. Control mechanisms in both frequency and time domain are used to modify these dynamics. First, by applying a phase step in the spectrum, we manipulate the phase of the oscillations. By direct analogy with Fresnel zone lenses, we then conceive highly phase-amplitude modulated pulse shapes that slice destructive interferences out of the excitation time structure and enhance the final population.


Voir en ligne : Phys. Rev. Lett. 89, 203003 (2002)