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Lasing in Single Cadmium Sulfide Nanowire Optical Cavities

Ritesh Agarwal·Carl J. Barrelet·Charles M. Lieber
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Abstract

The mechanism of lasing in single cadmium sulfide (CdS) nanowire cavities was elucidated by temperature-dependent and time-resolved photoluminescence (PL) measurements. Temperature-dependent PL studies reveal rich spectral features and show that an exciton-exciton interaction is critical to lasing up to 75 K, while an exciton-phonon process dominates at higher temperatures. These measurements together with temperature and intensity dependent life-time and threshold studies suggest that lasing is due to formation of excitons, and moreover, have implications for the design of efficient, low-threshold nanowire lasers.

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Ritesh Agarwal, Carl J. Barrelet, Charles M. Lieber. 2004-12-06. Lasing in Single Cadmium Sulfide Nanowire Optical Cavities. https://doi.org/10.1021/nl050440u

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