Five-Fold Reduction of Lasing Threshold near the First $\Gamma L$-Pseudogap of ZnO Inverse Opals

Michael Scharrer, Heeso Noh, Xiaohua Wu +4

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…