Time-resolved study of stimulated emission in ZnO tetrapod nanowires

Y. H. Leung; Wai Ming Kwok; A. B. Djurišić; D. L. Phillips; W. K. Chan

doi:10.1088/0957-4484/16/4/040

Time-resolved study of stimulated emission in ZnO tetrapod nanowires

Y. H. Leung, Wai Ming Kwok, A. B. Djurišić, D. L. Phillips, W. K. Chan

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

62 Citations (Scopus)

Abstract

ZnO tetrapod nanowires were fabricated by evaporation of Zn in a N2gas flow. Stimulated emission with a threshold of ∼ 100 μJ cm-2was observed and the linewidths of individual modes were in the range 0.7-0.9 nm. Time-resolved measurements have been performed at different excitation powers. With an increase of the pump power, the transition from exciton stimulated emission to the electron-hole plasma regime can be clearly observed. Both electron-hole plasma and exciton emission have decay times under 10 ps.

Original language	English
Pages (from-to)	579-582
Number of pages	4
Journal	Nanotechnology
Volume	16
Issue number	4
DOIs	https://doi.org/10.1088/0957-4484/16/4/040
Publication status	Published - 1 Apr 2005
Externally published	Yes

ASJC Scopus subject areas

Bioengineering
General Chemistry
General Materials Science
Mechanics of Materials
Mechanical Engineering
Electrical and Electronic Engineering

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10.1088/0957-4484/16/4/040

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AU - Leung, Y. H.

AU - Kwok, Wai Ming

AU - Djurišić, A. B.

AU - Phillips, D. L.

AU - Chan, W. K.

PY - 2005/4/1

Y1 - 2005/4/1

N2 - ZnO tetrapod nanowires were fabricated by evaporation of Zn in a N2gas flow. Stimulated emission with a threshold of ∼ 100 μJ cm-2was observed and the linewidths of individual modes were in the range 0.7-0.9 nm. Time-resolved measurements have been performed at different excitation powers. With an increase of the pump power, the transition from exciton stimulated emission to the electron-hole plasma regime can be clearly observed. Both electron-hole plasma and exciton emission have decay times under 10 ps.

AB - ZnO tetrapod nanowires were fabricated by evaporation of Zn in a N2gas flow. Stimulated emission with a threshold of ∼ 100 μJ cm-2was observed and the linewidths of individual modes were in the range 0.7-0.9 nm. Time-resolved measurements have been performed at different excitation powers. With an increase of the pump power, the transition from exciton stimulated emission to the electron-hole plasma regime can be clearly observed. Both electron-hole plasma and exciton emission have decay times under 10 ps.

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DO - 10.1088/0957-4484/16/4/040

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JO - Nanotechnology

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Time-resolved study of stimulated emission in ZnO tetrapod nanowires

Abstract

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