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Random Lasing Action from Randomly Assembled ZnS Nanosheets

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Author(s): Yang HY | Yu SF | Yan J | Zhang LD

Journal: Nanoscale Research Letters
ISSN 1931-7573

Volume: 5;
Issue: 5;
Start page: 809;
Date: 2010;
Original page

Keywords: ZnS nanosheets | Random lasing | Ultraviolet

ABSTRACT
Abstract Lasing characteristics of randomly assembled ZnS nanosheets are studied at room temperature. Under 266-nm optical excitation, sharp lasing peaks emitted at around 332 nm with a linewidth less than 0.4 nm are observed in all directions. In addition, the dependence of lasing threshold intensity with the excitation area is shown in good agreement with the random laser theory. Hence, it is verified that the lasing characteristics of randomly assembled ZnS nanosheets are attributed to coherent random lasing action.
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