Enhancement of ultraviolet lasing from Ag-coated highly disordered ZnO films by surface-plasmon resonance

A. P. Abiyasa; Siu Fung Yu; Shu Ping Lau; Eunice S.P. Leong; H. Y. Yang

doi:10.1063/1.2746940

Enhancement of ultraviolet lasing from Ag-coated highly disordered ZnO films by surface-plasmon resonance

A. P. Abiyasa, Siu Fung Yu, Shu Ping Lau, Eunice S.P. Leong, H. Y. Yang

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

103 Citations (Scopus)

Abstract

Large improvement in random lasing action at ultraviolet wavelength has been achieved from highly disordered ZnO films with Ag coating. The lasing threshold can be reduced by two times and slope efficiency can be increased by 5.5 times. The improvement is due to the presence of Ag coating, which enhances the surface coupling of lasing emission from the ZnO films by surface-plasmon resonance and reduces the scattering loss experienced by the random cavity modes. Furthermore, the enhancement of lasing efficiency is dependent on the Ag coating's surface roughness, which can be controlled through the surface morphology of ZnO films.

Original language	English
Article number	231106
Journal	Applied Physics Letters
Volume	90
Issue number	23
DOIs	https://doi.org/10.1063/1.2746940
Publication status	Published - 27 Jun 2007
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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10.1063/1.2746940

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abstract = "Large improvement in random lasing action at ultraviolet wavelength has been achieved from highly disordered ZnO films with Ag coating. The lasing threshold can be reduced by two times and slope efficiency can be increased by 5.5 times. The improvement is due to the presence of Ag coating, which enhances the surface coupling of lasing emission from the ZnO films by surface-plasmon resonance and reduces the scattering loss experienced by the random cavity modes. Furthermore, the enhancement of lasing efficiency is dependent on the Ag coating's surface roughness, which can be controlled through the surface morphology of ZnO films.",

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AU - Leong, Eunice S.P.

AU - Yang, H. Y.

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N2 - Large improvement in random lasing action at ultraviolet wavelength has been achieved from highly disordered ZnO films with Ag coating. The lasing threshold can be reduced by two times and slope efficiency can be increased by 5.5 times. The improvement is due to the presence of Ag coating, which enhances the surface coupling of lasing emission from the ZnO films by surface-plasmon resonance and reduces the scattering loss experienced by the random cavity modes. Furthermore, the enhancement of lasing efficiency is dependent on the Ag coating's surface roughness, which can be controlled through the surface morphology of ZnO films.

AB - Large improvement in random lasing action at ultraviolet wavelength has been achieved from highly disordered ZnO films with Ag coating. The lasing threshold can be reduced by two times and slope efficiency can be increased by 5.5 times. The improvement is due to the presence of Ag coating, which enhances the surface coupling of lasing emission from the ZnO films by surface-plasmon resonance and reduces the scattering loss experienced by the random cavity modes. Furthermore, the enhancement of lasing efficiency is dependent on the Ag coating's surface roughness, which can be controlled through the surface morphology of ZnO films.

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Enhancement of ultraviolet lasing from Ag-coated highly disordered ZnO films by surface-plasmon resonance

Abstract

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