Abstract

UV lasing in three-dimensional ZnO photonic crystals is demonstrated at room temperature. The photonic crystals are inverse opals with high refractive index contrast that simultaneously confine light and provide optical gain. Highly directional lasing with tunable wavelength is obtained by optical pumping. Comparison of the experimental results to the calculated band structure shows that lasing occurs in high-order bands with abnormally low group velocity. This demonstrates that the high-order band structure of three-dimensional photonic crystals can be used to effectively confine light and enhance emission. Our findings may also impact other applications of photonic crystal devices. ©2006 American Institute of Physics

Department(s)

Physics

Sponsor(s)

National Science Foundation (U.S.)

Keywords and Phrases

II-VI Semiconductors; Laser Tuning; Photonic Band Gap; Stimulated Emission; Ultraviolet Sources; Wide Band Gap Semiconductors; Optical pumping; Photonic crystals; Refractive index; Semiconductor lasers; Zinc compounds

Document Type

Article - Journal

Document Version

Final Version

File Type

text

Language(s)

English

Rights

© 2006 American Institute of Physics (AIP), All rights reserved.

Included in

Physics Commons

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