Title

Five-Fold Reduction of Lasing Threshold near the First ΓL-Pseudogap of ZnO Inverse Opals

Abstract

We report room temperature lasing in ZnO inverse opal photonic crystals in the near-ultraviolet (UV) frequency range. We observe random lasing due to disorder in the structures when the photonic pseudogaps are located away from the ZnO gain spectrum. Tuning the first ΓL-pseudogap to the gain peak leads to a five-fold reduction in lasing threshold and a frequency shift of the lasing modes due to the enhanced confinement of light.

Department(s)

Physics

Keywords and Phrases

3D Photonic Crystals; Opal; Random Laser; ZnO

International Standard Serial Number (ISSN)

1464-4258

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2010 Institute of Physics (IOP), All rights reserved.

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