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Proceedings Paper

White-light lasing in ZnO microspheres fabricated by laser ablation
Author(s): Shinya Okamoto; Yosuke Minowa; Masaaki Ashida
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Paper Abstract

We succeeded in fabricating ZnO microspheres with high sphericity by laser ablation in superfluid helium. Such microspheres enable efficient lasing in the whole visible region due to defects with a CW laser at room temperature. The lasing threshold is found to be around 100 W/cm2. This value is much smaller than those of the recent reports on the lasing in ZnO microwire. Cathodoluminescence of single ZnO microspheres was also measured.

Paper Details

Date Published: 29 February 2012
PDF: 7 pages
Proc. SPIE 8263, Oxide-based Materials and Devices III, 82630K (29 February 2012); doi: 10.1117/12.907595
Show Author Affiliations
Shinya Okamoto, Osaka Univ. (Japan)
Yosuke Minowa, Osaka Univ. (Japan)
Masaaki Ashida, Osaka Univ. (Japan)

Published in SPIE Proceedings Vol. 8263:
Oxide-based Materials and Devices III
Ferechteh H. Teherani; David C. Look; David J. Rogers, Editor(s)

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