Random lasing action of randomly assembled ZnO Nanowires with MgO coating

H. Y. Yang; Siu Fung Yu; G. P. Li; T. Wu

doi:10.1364/OE.18.013647

Random lasing action of randomly assembled ZnO Nanowires with MgO coating

H. Y. Yang, Siu Fung Yu, G. P. Li, T. Wu

Research output: Journal article publication › Journal article › Academic research › peer-review

26 Citations (Scopus)

Abstract

Lasing characteristics of randomly assembled ZnO nanowires (NWs) coated with different thickness of MgO layers are investigated. It is found that the MgO coated randomly assembled ZnO NWs demonstrate random lasing action and the formation of coherent optical feedback is dependent on the thickness of MgO coating. Pump threshold of the MgO coated randomly assembled ZnO NWs increases with the increase of MgO thickness. Nevertheless, the appropriate use of MgO coating can reduce the pump threshold by ∼30% and the corresponding characteristic temperature can be improved by 28 K.

Original language	English
Pages (from-to)	13647-13654
Number of pages	8
Journal	Optics Express
Volume	18
Issue number	13
DOIs	https://doi.org/10.1364/OE.18.013647
Publication status	Published - 21 Jun 2010
Externally published	Yes

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics

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10.1364/OE.18.013647

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AB - Lasing characteristics of randomly assembled ZnO nanowires (NWs) coated with different thickness of MgO layers are investigated. It is found that the MgO coated randomly assembled ZnO NWs demonstrate random lasing action and the formation of coherent optical feedback is dependent on the thickness of MgO coating. Pump threshold of the MgO coated randomly assembled ZnO NWs increases with the increase of MgO thickness. Nevertheless, the appropriate use of MgO coating can reduce the pump threshold by ∼30% and the corresponding characteristic temperature can be improved by 28 K.

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Random lasing action of randomly assembled ZnO Nanowires with MgO coating

Abstract

ASJC Scopus subject areas

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