Abstract
This paper presents time-resolved PL studies of biexcitons in GaAs QW with femtosecond resolution. Using polarization selection rules for biexcitons, the biexciton PL is separated from the exciton PL while still retaining adequate time resolution. A surprising initial transient characterized by a finite rise and an extremely fast decay is revealed in the biexciton PL. It is shown that this initial transient stems from coherent quantum evolution of relative momentum of two excitons in the molecule, in sharp contrast to the initial dynamics of exciton radiative recombination. The initial transient also reflects a type of quantum beat that differs from the usual quantum beats in transient optical measurements.
| Original language | English (US) |
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| Pages | 1 |
| Number of pages | 1 |
| State | Published - 1996 |
| Externally published | Yes |
| Event | Proceedings of the 1996 6th Quantum Electronics and Laser Science Conference, QELS - Anaheim, CA, USA Duration: Jun 2 1996 → Jun 7 1996 |
Conference
| Conference | Proceedings of the 1996 6th Quantum Electronics and Laser Science Conference, QELS |
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| City | Anaheim, CA, USA |
| Period | 6/2/96 → 6/7/96 |
All Science Journal Classification (ASJC) codes
- General Physics and Astronomy