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Fabrication and Lasing Properties of Single-Crystalline Semiconductor Microspheres with Anisotropic Crystal Structures

Published online by Cambridge University Press:  11 February 2015

Shinya Okamoto
Affiliation:
Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyamacho, Toyonaka, Osaka 560-8531, Japan
Satoshi Ichikawa
Affiliation:
Institute for NanoScience Design, Osaka University, 1-3 Machikaneyamacho, Toyonaka, Osaka 560-8531, Japan
Yosuke Minowa
Affiliation:
Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyamacho, Toyonaka, Osaka 560-8531, Japan
Masaaki Ashida
Affiliation:
Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyamacho, Toyonaka, Osaka 560-8531, Japan
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Abstract

We fabricated single-crystalline microspheres of wide-gap semiconductors with anisotropic crystal structures, such as ZnO and ZnSe, by laser ablation in superfluid helium and investigated their lasing properties. Whispering gallery mode lasing at their band edges in ultraviolet region was clearly observed under the optical excitation, reflecting their high sphericity and crystal quality.

Type
Articles
Copyright
Copyright © Materials Research Society 2015 

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