Five-fold reduction of lasing threshold near the first ΓL-pseudogap of ZnO inverse opals

Citation data:

Journal of Optics, ISSN: 2040-8978, Vol: 12, Issue: 2, Page: 1

Publication Year:
2010
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Repository URL:
http://scholarsmine.mst.edu/phys_facwork/1016
DOI:
10.1088/2040-8978/12/2/024007
Author(s):
Scharrer, Michael; Noh, Heeso; Wu, Xiaohua; Anderson, Mark A.; Yamilov, Alexey; Cao, Hui; Chang, Robert P.H.
Publisher(s):
IOP Publishing; Institute of Physics (IOP)
Tags:
Physics and Astronomy; 3D Photonic Crystals; Opal; Random Laser; ZnO; 3D Photonic Crystals; Opal; Random Laser; ZnO; Physics
article description
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. © 2010 IOP Publishing Ltd.