High-temperature random lasing in ZnO nanoneedles

H. Y. Yang; Shu Ping Lau; Siu Fung Yu; A. P. Abiyasa; M. Tanemura; T. Okita; H. Hatano

doi:10.1063/1.2219419

High-temperature random lasing in ZnO nanoneedles

H. Y. Yang, Shu Ping Lau, Siu Fung Yu, A. P. Abiyasa, M. Tanemura, T. Okita, H. Hatano

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

47 Citations (Scopus)

Abstract

We report the high-temperature ultraviolet random laser action in ZnO nanoneedles. The characteristic temperature of the ZnO nanoneedle lasers was derived to be 138 K in the temperature range from 300 to 615 K. The cavity length of the random lasers as a function of temperature was determined by Fourier transform spectroscopy. The cavity length decreased with an increase in temperature from ~14 μm at 300 K to ~2 μm at 550 K. The optical gain of the ZnO nanoneedle lasers at high temperature is attributed to a self-compensation mechanism in the cavity length.

Original language	English
Article number	011103
Journal	Applied Physics Letters
Volume	89
Issue number	1
DOIs	https://doi.org/10.1063/1.2219419
Publication status	Published - 14 Jul 2006
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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10.1063/1.2219419

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AU - Okita, T.

AU - Hatano, H.

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AB - We report the high-temperature ultraviolet random laser action in ZnO nanoneedles. The characteristic temperature of the ZnO nanoneedle lasers was derived to be 138 K in the temperature range from 300 to 615 K. The cavity length of the random lasers as a function of temperature was determined by Fourier transform spectroscopy. The cavity length decreased with an increase in temperature from ~14 μm at 300 K to ~2 μm at 550 K. The optical gain of the ZnO nanoneedle lasers at high temperature is attributed to a self-compensation mechanism in the cavity length.

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High-temperature random lasing in ZnO nanoneedles

Abstract

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