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Phys Rev Lett ; 90(10): 106401, 2003 Mar 14.
Artículo en Inglés | MEDLINE | ID: mdl-12689016

RESUMEN

We studied the pump coherent dynamics in a II-VI microcavity parametric amplifier, using angle-resolved four-wave mixing. The polariton parametric amplification is found to result in a strong quenching and saturation of the pump coherence lifetime above the threshold. For the polariton scattering processes that remain below the amplification threshold, we find an angle-dependent collision broadening associated with the efficiency of the polariton scattering towards the excitonic reservoir.

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