Open AccessQuasi-whispering gallery modes of exciton-polaritons in a ZnO microrod
Author(s) -
Liaoxin Sun,
Hongxing Dong,
Wei Xie,
Zhenghua An,
Xuechu Shen,
Zhanghai Chen
Publication year - 2010
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.18.015371
Subject(s) - whispering gallery wave , polariton , whispering gallery , optics , exciton , photoluminescence , physics , ultraviolet , optoelectronics , materials science , resonator , condensed matter physics
We report the photoluminescence (PL) investigations of quasi-whispering gallery mode (quasi-WGM) polaritons in a ZnO microrod at room temperature. By using the confocal micro-PL spectroscopic technique, we observe the clear optical quasi-WGMs. These quasi-WGMs appeared in the ultraviolet (UV) emission region where the cavity modes strongly couple with excitons and form polaritons. The quasi-WGMs polaritons can be well described by the plane wave interference and the coupling oscillator model.