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.
Original language | English |
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Article number | 017403 |
Number of pages | 4 |
Journal | Physical Review Letters |
Volume | 95 |
Issue number | 1 |
DOIs | |
Publication status | Published - 30 Jun 2005 |
Keywords
- third-order polarization
- excitonic transitions
- pulsed optical excitation
- free polarization decay
- photon echo