Vibronic quantum beats in PbS microcrystallites
- 15 July 1993
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 48 (4) , 2819-2822
- https://doi.org/10.1103/physrevb.48.2819
Abstract
We have used femtosecond optical spectroscopy to study the dynamics of excitons strongly confined in microcrystallites of the narrow-band-gap semiconductor PbS. The transient absorption of the lowest exciton level exhibits terahertz-frequency vibronic quantum beats. Far-infrared measurements show that the vibrations are confined transverse-optical phonons.Keywords
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