Microscopic measurement of photon echo formation in groups of individual excitonic transitions.

The third-order polarization emitted from groups of individual localized excitonic transitions after pulsed optical excitation is measured. We observe the evolution of the nonlinear response from the case of a free polarization decay for a single transition, to that of a photon echo for many transit...

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Autori principali: Langbein, W, Patton, B
Natura: Journal article
Lingua:English
Pubblicazione: 2005
Descrizione
Riassunto:The third-order polarization emitted from groups of individual localized excitonic transitions after pulsed optical excitation is measured. We observe the evolution of the nonlinear response from the case of a free polarization decay for a single transition, to that of a photon echo for many transitions. The echo is shown to arise from the mutual rephasing of the emission from individual transitions.