Quasi-whispering gallery modes of exciton-polaritons in a ZnO microrod.
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.
Sun
Liaoxin
L
State Key Laboratory of Surface Physics and Department of Physics, Fudan University, Shanghai 200433, China.
Dong
Hongxing
H
Xie
Wei
W
An
Zhenghua
Z
Shen
Xuechu
X
Chen
Zhanghai
Z