Review Article


2018, 11(6): 3050–3064


Plasmon-enhanced ZnO whispering-gallery mode lasing

Chunxiang Xu1 (*), Feifei Qin1, Qiuxiang Zhu1,2, Junfeng Lu1,3, Yueyue Wang4, Jitao Li5, Yi Lin6, Qiannan Cui1, Zengliang Shi1, and Arumugam Gowri Manohari1

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1 State Key Laboratory of Bioelectronics, Southeast University, Nanjing 210096, China
2 College of Information and Electronic Engineering, Hunan City University, Yiyang 413000, China
3 Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing 100083, China
4 School of Sciences, Zhejiang A&F University, Hangzhou 311300, China
5 School of Physics and Telecommunications Engineering, Zhoukou Normal University, Zhoukou 466001, China
6 Department of Mathematics and Physics, Huaiyin Institute of Technology, Huaiyin 223306, China

Keywords: ZnO microcavity, surface plasmon, whispering-gallery mode
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ABSTRACT Collaborative enhancements from surface plasmons (SPs) and whispering-gallery modes (WGMs) can induce intense near-field effects with high spatial localization around the surface of a semiconducting material. One can construct a highly efficient hybrid microcavity using semiconducting materials through resonant coupling between SPs and WGMs. Hexagonal ZnO micro-/nanostructures, which have been employed as natural WGM microcavities for ultraviolet (UV) lasing, can be used as ideal platforms to construct such hybrid microcavities. Here, we comprehensively review the recent efforts for improving lasing performance by resonant coupling between SPs and WGMs. Traditional SPs originating from various metals as well as novel SPs originating from atomic layers such as graphene are considered. Moreover, we discuss the mechanism of light-matter interactions beyond the improvements in lasing performance.
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Plasmon-enhanced ZnO whispering-gallery mode lasing. Nano Res. 2018, 11(6): 3050–3064

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