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Confined Excitons with Ultrafast Radiative Decay Time Less Than 100 fs Enabling Survival at Room Temperature

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Abstract

Temperature dependence of degenerate four-wave mixing signal in high-quality CuCl thin films was investigated. We observed the signal of modes with large radiative width at high temperatures due to ultrafast radiative decay faster than dephasing.

© 2010 Optical Society of America

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