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Ultrastrong Mode Confinement in ZnO Surface Plasmon Nanolasers

Authors :
Chih Kai Chiang
Hao-Chung Kuo
Tien-Chang Lu
Chien-Chung Lin
Yu Hsun Chou
Heng Li
Chun Ting Yang
Tzy-Rong Lin
Shing-Chung Wang
Bo-Tsun Chou
Ying-Yu Lai
Source :
ACS Nano. 9:3978-3983
Publication Year :
2015
Publisher :
American Chemical Society (ACS), 2015.

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.

Details

ISSN :
1936086X and 19360851
Volume :
9
Database :
OpenAIRE
Journal :
ACS Nano
Accession number :
edsair.doi.dedup.....1e1a2bd13c59822e70679c51b59ba6d8
Full Text :
https://doi.org/10.1021/acsnano.5b01643