| Autor: |
J. P. Doran, R.P. Stanley, R.F. Austin, R.D. Feldman, John Hegarty |
| Rok vydání: |
1994 |
| Předmět: |
|
| Zdroj: |
Journal of Crystal Growth. 138:826-830 |
| ISSN: |
0022-0248 |
| Popis: |
Polarization dependent dephasing measurements are performed in inhomogeneously broadened Cd x Zn 1-x Te/ZnTe multiple quantum wells at low and high exciton densities. At low temperature and density the self-diffracted signal when the beams are cross-polarized is much weaker than, and decays much faster than, the signal obtained when the beams are co-polarized. At high densities the signal strengths become the same. A model is proposed to explain the results. We find that the dynamics of a small subset of excitons which are created in a spatially bunched manner can be probed by cross polarizing the beams |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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