Open AccessSurface plasmons amplifications in single Ag nanoring
Author(s) -
Zhong-Jian Yang,
Nam-Chol Kim,
Jianbo Li,
Mu-Tian Cheng,
ShaoDing Liu,
Hao Zhang,
QuQuan Wang
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.18.004006
Subject(s) - nanoring , materials science , surface plasmon , plasmon , optics , quantum dot , optoelectronics , physics
The stimulated amplifications of surface plasmons (SPs) propagating along a single silver nanoring is theoretically investigated by considering the interactions between SPs and activated semiconductor quantum dots (SQDs). Threshold condition for the stimulated amplifications, the SP density as a function of propagation length and the maximum SP density are obtained. The SPs can be nonlinearly amplified when the pumping rate of SQDs is larger than the threshold, and the maximum value of SP density increases linearly with the pumping rate of SQDs.