Effect of a dielectric substrate on whispering-gallery-mode sensors

被引：24
|
作者：
Le Thomas, Nicolas
Woggon, Ulrike
Langbein, Wolfgang
Artemyev, Mikhail V.
机构：
[1] Univ Dortmund, Fachbereich Phys, D-44227 Dortmund, Germany
[2] Cardiff Univ, Sch Phys & Astron, Cardiff CF24 3YB, Wales
[3] Belarusian State Univ, Inst Phys Chem Problems, Minsk 220080, BELARUS
来源：
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS | 2006年 / 23卷 / 11期
关键词：
D O I：
10.1364/JOSAB.23.002361
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
The effect of a dielectric substrate on whispering-gallery-mode (WGM)-based devices is experimentally investigated and theoretically quantified for spherical dielectric microresonators with similar to 5 mu m diameter. The interaction with a dielectric substrate yields a homogeneous broadening with a threshold-like behavior versus the azimuthal quantum number, which is accompanied by an energy renormalization of about 20% of the broadening. The WGM orbital planes of narrowest spectral linewidth (close to the Mie value) in the presence of a substrate are identified, and the consequences for the scattering spectrum analysis of microsphere devices relying on high-Q factors are discussed. (c) 2006 Optical Society of America
引用
收藏
页码：2361 / 2365
页数：5
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