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

Wolfgang Langbein·Brian Patton
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Abstract

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.

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Wolfgang Langbein, Brian Patton. 2005-05-03. Microscopic measurement of photon echo formation in groups of individual excitonic transitions. https://doi.org/10.1103/physrevlett.95.017403

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