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Measurements of exciton–polariton dynamics in ZnO by using nonlinear spectroscopic techniques by K. Hazu; S. Adachi; T. Sota; S.F. Chichibu is a Materials Science article available to read on EtoBox.

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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 1⁄4 10 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 $12 ps which may represent exciton-polariton lifetime.

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Author

K. Hazu; S. Adachi; T. Sota; S.F. Chichibu

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 0022-2313)

Published

2005

Language

EN

Field

Materials Science (Physical Sciences)