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Room-Temperature Exciton Lasing In Ultrathin Film of Coupled Nanocrystals

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Abstract

We demonstrate exciton lasing in sub-wavelength coupled nanostructures at ultralow fluence threshold, as probed by femtosecond broadband emission and absorption spectroscopy. The complex spectrotemporal dynamics reveal for the first time an excitonic-to-electron-hole plasma lasing mechanism.

© 2015 Optical Society of America

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