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26 April 2024

» arxiv » 0907.0736

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Five-Fold Reduction of Lasing Threshold near the First $Gamma L$-Pseudogap of ZnO Inverse Opals
Michael Scharrer ; Heeso Noh ; Xiaohua Wu ; Mark A Anderson ; Alexey Yamilov ; Hui Cao ; Robert P H Chang ;
Date:	4 Jul 2009
Abstract:	We report room temperature lasing in ZnO inverse opal photonic crystals in the near-ultraviolet (UV) frequency. 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 $Gamma L$-pseudogap to the gain peak leads to a five-fold reduction in lasing threshold and frequency shift of lasing modes due to the enhanced confinement of light.
Source:	arXiv, 0907.0736
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