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Ultrafast observation of weak coupling effects in ZnO-Ag heterostructures

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Abstract

Transmission and reflection pump-probe-spectroscopy on ZnO/MgO heterostructures demonstrate a 600fs excitonic decay to impurity bound states located near the ZnO/MgO interface. Surface-plasmon-polaritons supported on a 30nm Ag film quench this process through weak coupling effects.

© 2011 Optical Society of America

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