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Observation of coherent transients in ultrashort chirped excitation of an undamped two-level system

Sebastien Zamith·Jerome Degert·Sabine Stock·Beatrice de Beauvoir·Valerie Blanchet·M. Aziz Bouchene·Bertrand Girard
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Abstract

The effects of Coherent excitation of a two level system with a linearly chirped pulse are studied theoretically and experimentally (in Rb (5s - 5p)) in the low field regime. The Coherent Transients are measured directly on the excited state population on an ultrashort time scale. A sharp step corresponds to the passage through resonance. It is followed by oscillations resulting from interferences between off-resonant and resonant contributions. We finally show the equivalence between this experiment and Fresnel diffraction by a sharp edge.

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Sebastien Zamith, Jerome Degert, Sabine Stock, Beatrice de Beauvoir, Valerie Blanchet, M. Aziz Bouchene, Bertrand Girard. 2001-05-11. Observation of coherent transients in ultrashort chirped excitation of an undamped two-level system. https://doi.org/10.1103/physrevlett.87.033001

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