Ultraviolet lasing of ZnO whiskers prepared by catalyst-free thermal evaporation

Y. G. Wang; Clement Yuen; Shu Ping Lau; Siu Fung Yu; B. K. Tay

doi:10.1016/S0009-2614(03)01191-6

Ultraviolet lasing of ZnO whiskers prepared by catalyst-free thermal evaporation

Y. G. Wang, Clement Yuen, Shu Ping Lau, Siu Fung Yu, B. K. Tay

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

44 Citations (Scopus)

Abstract

ZnO whiskers were synthesized by vapor transportation via thermal evaporation of ZnO powders in open air. Preferred aligned hexagonal ZnO whiskers with length of 30-40 μm were obtained. Room temperature photoluminescence spectrum of the whiskers exhibits intense ultraviolet excitonic emission and weak defect related visible emission. Optical pumped lasing actions have been observed at 393 nm at room temperature when the excitation intensity exceeds 150 kW/cm2. Laser cavities are formed in the whiskers between the smooth interfaces of the two ends, which acted as reflectors.

Original language	English
Pages (from-to)	329-332
Number of pages	4
Journal	Chemical Physics Letters
Volume	377
Issue number	3-4
DOIs	https://doi.org/10.1016/S0009-2614(03)01191-6
Publication status	Published - 15 Aug 2003
Externally published	Yes

ASJC Scopus subject areas

General Physics and Astronomy
Physical and Theoretical Chemistry

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10.1016/S0009-2614(03)01191-6

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abstract = "ZnO whiskers were synthesized by vapor transportation via thermal evaporation of ZnO powders in open air. Preferred aligned hexagonal ZnO whiskers with length of 30-40 μm were obtained. Room temperature photoluminescence spectrum of the whiskers exhibits intense ultraviolet excitonic emission and weak defect related visible emission. Optical pumped lasing actions have been observed at 393 nm at room temperature when the excitation intensity exceeds 150 kW/cm2. Laser cavities are formed in the whiskers between the smooth interfaces of the two ends, which acted as reflectors.",

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AU - Wang, Y. G.

AU - Yuen, Clement

AU - Lau, Shu Ping

AU - Yu, Siu Fung

AU - Tay, B. K.

PY - 2003/8/15

Y1 - 2003/8/15

N2 - ZnO whiskers were synthesized by vapor transportation via thermal evaporation of ZnO powders in open air. Preferred aligned hexagonal ZnO whiskers with length of 30-40 μm were obtained. Room temperature photoluminescence spectrum of the whiskers exhibits intense ultraviolet excitonic emission and weak defect related visible emission. Optical pumped lasing actions have been observed at 393 nm at room temperature when the excitation intensity exceeds 150 kW/cm2. Laser cavities are formed in the whiskers between the smooth interfaces of the two ends, which acted as reflectors.

AB - ZnO whiskers were synthesized by vapor transportation via thermal evaporation of ZnO powders in open air. Preferred aligned hexagonal ZnO whiskers with length of 30-40 μm were obtained. Room temperature photoluminescence spectrum of the whiskers exhibits intense ultraviolet excitonic emission and weak defect related visible emission. Optical pumped lasing actions have been observed at 393 nm at room temperature when the excitation intensity exceeds 150 kW/cm2. Laser cavities are formed in the whiskers between the smooth interfaces of the two ends, which acted as reflectors.

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U2 - 10.1016/S0009-2614(03)01191-6

DO - 10.1016/S0009-2614(03)01191-6

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JO - Chemical Physics Letters

JF - Chemical Physics Letters

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ER -

Ultraviolet lasing of ZnO whiskers prepared by catalyst-free thermal evaporation

Abstract

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