Title: Ultrastrong Mode Confinement in ZnO Surface Plasmon Nanolasers
Authors: Chou, Yu-Hsun
Chou, Bo-Tsun
Chiang, Chih-Kai
Lai, Ying-Yu
Yang, Chun-Ting
Li, Heng
Lin, Tzy-Rong
Lin, Chien-Chung
Kuo, Hao-Chung
Wang, Shing-Chung
Lu, Tien-Chang
Institute of Lighting and Energy Photonics
Department of Electronics Engineering and Institute of Electronics
Department of Photonics
Keywords: nanolaser;surface plasmon;ZnO;nanowire;silver
Issue Date: 1-Apr-2015
Abstract: Nano lasers 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.
URI: http://dx.doi.org/10.1021/acsnano.5b01643
ISSN: 1936-0851
DOI: 10.1021/acsnano.5b01643
Journal: ACS NANO
Begin Page: 3978
End Page: 3983
Appears in Collections:Articles