Stimulated emission and lasing of random-growth oriented ZnO nanowires

We report room-temperature ultraviolet stimulated emission and lasing from optically pumped high-quality ZnO nanowires. Emission due to the exciton-exciton scattering process shows apparent stimulated-emission behavior. Several sharp peaks associated with random laser action are seen under high pump...

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Bibliographic Details
Published in:Journal of applied physics 2005-03, Vol.97 (6), p.064315-064315-4
Main Authors: Hsu, Hsu-Cheng, Wu, Chun-Yi, Hsieh, Wen-Feng
Format: Article
Language:English
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Summary:We report room-temperature ultraviolet stimulated emission and lasing from optically pumped high-quality ZnO nanowires. Emission due to the exciton-exciton scattering process shows apparent stimulated-emission behavior. Several sharp peaks associated with random laser action are seen under high pumping intensity. The mechanism of laser emission is attributed to coherent multiple scattering among the random-growth oriented nanowires. The characteristic cavity length is determined by the Fourier transform of the lasing spectrum.
ISSN:0021-8979
1089-7550
DOI:10.1063/1.1862312