| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 9586171 | Journal of Luminescence | 2005 | 4 Pages |
Abstract
We have studied the exciton-polariton dynamics in a c-face bulk ZnO crystal grown by the seeded vapor transport method. We have performed two-pulse spectrally resolved four-wave mixing (SR-FWM) and three-pulse SR-FWM at T=10Â K. In two-pulse FWM experiment, obtained FWM signals showed the fast dephasing which has been attributed to the strong polariton dispersion of the upper polariton of B exciton. On the other hand, in three-pulse FWM experiment, the signal decay shows the free exciton population relaxation. Observed FWM signal has decayed with time constant â¼12Â ps which may represent exciton-polariton lifetime.
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Authors
K. Hazu, S. Adachi, T. Sota, S.F. Chichibu,