title: Ultrastrong Mode Confinement in ZnO Surface Plasmon Nanolasers.
abstract: Nanolasers with an ultracompact footprint can provide high-intensity coherent light, which can be potentially applied to high-capacity signal processing, biosensing, and subwavelength imaging. Among various nanolasers, those with cavities surrounded by metals have been shown to have superior light emission properties because of the surface plasmon effect that provides enhanced field confinement capability and enables exotic light-matter interaction. In this study, we demonstrated a robust ultraviolet ZnO nanolaser that can operate at room temperature by using silver to dramatically shrink the mode volume. The nanolaser shows several distinct features including an extremely small mode volume, a large Purcell factor, and a slow group velocity, which ensures strong interaction with the exciton in the nanowire.
authors: †Institute of Lighting and Energy Photonics, National Chiao Tung University, Tainan, Taiwan.
authors: Yu-Hsun
authors: YH
authors: Chou
authors: Bo-Tsun
authors: BT
authors: Chou
authors: Chih-Kai
authors: CK
authors: Chiang
authors: Ying-Yu
authors: YY
authors: Lai
authors: Chun-Ting
authors: CT
authors: Yang
authors: Heng
authors: H
authors: Li
authors: Tzy-Rong
authors: TR
authors: Lin
authors: †Institute of Lighting and Energy Photonics, National Chiao Tung University, Tainan, Taiwan.
authors: Chien-Chung
authors: CC
authors: Lin
authors: Hao-Chung
authors: HC
authors: Kuo
authors: Shing-Chung
authors: SC
authors: Wang
authors: Tien-Chang
authors: TC
authors: Lu
mesh_terms: D007834:Lasers; D036103:Nanotechnology / Q000379:methods*; D013696:Temperature; D015034:Zinc Oxide
chemical_list: D015034:Zinc Oxide
keywords: ZnO; nanolaser; nanowire; silver; surface plasmon