Effect of surrounding inhomogeneities on whispering gallery modes in spherical resonators

被引：4

作者：

Amini, Sina ^{[1
]}

You, Yu ^{[2
]}

Kattawar, George W. ^{[2
]}

Meissner, Kenith E. ^{[1
]}

机构：

[1] Texas A&M Univ, Dept Biomed Engn, College Stn, TX 77843 USA

[2] Texas A&M Univ, Dept Phys & Astron, College Stn, TX 77843 USA

来源：

APPLIED OPTICS | 2013年 / 52卷 / 04期

基金：

美国国家科学基金会;

关键词：

OPTICAL MICROCAVITIES; RESONANCE SHIFTS; SCATTERING; MICROSPHERE; SINGLE; NANOPARTICLES; ADSORPTION; SIMULATION; PARTICLES; LIGHT;

D O I：

10.1364/AO.52.000690

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The Amsterdam discrete dipole approximation (ADDA) is used to study the effects of an inhomogeneous refractive index in the surrounding medium of a microspherical resonator on the quality and position of the whispering gallery modes (WGMs). The model consists of a polystyrene microsphere with a refractive index, n, of 1.587 surrounded by water (n = 1.333) and an inhomogeneity (n = 1.5) on top of the microsphere. The effect of the area of the inhomogeneity on the WGMs is modeled using the ADDA code and compared with Lorenz-Mie code. WGMs of various quantum dot embedded microspheres mounted on atomic force microscope cantilevers are experimentally measured and shown to be consistent with the model. (C) 2013 Optical Society of America

引用

页码：690 / 697

页数：8

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