Mode characteristics of metal-coated microcavity

被引：15

作者：

Gu, Jinyi ^{[1
]}

Zhang, Zhuo ^{[1
]}

Li, Mi ^{[1
]}

Song, Yuejiang ^{[1
,2
]}

机构：

[1] Nanjing Univ, Inst Opt Commun Engn, Nanjing 210096, Jiangsu, Peoples R China

[2] Univ Calif Irvine, Beckman Laser Inst, Irvine, CA 92612 USA

来源：

PHYSICAL REVIEW A | 2014年 / 90卷 / 01期

基金：

美国国家科学基金会;

关键词：

WHISPERING-GALLERY MODES; MICROSPHERE LASER;

D O I：

10.1103/PhysRevA.90.013816

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The mode characteristics (dispersion relation and Q factor) of metal-coated microcylinders are achieved from the analytical resonance eigenequation. Among the resonance modes, two surface plasmon polariton (SPP) modes have completely different characteristics compared to the hybrid plasmonic whispering gallery modes (WGMs). In the metal-coated microcylinder, the Q factor of the asymmetrical SPP mode can be greater than the symmetric mode, and the hybrid plasmonic WGMs have a greater mode index range, extending down to zero. Also, the mode indexes and Q factors of the resonance modes are measured by the attenuated total reflection and resonance linewidth method, respectively. The experimental results agree well with the theoretical.

引用

页数：6

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