低语长廊波浪
谐振器
材料科学
制作
等离子体子
电介质
光电子学
光子学
共振(粒子物理)
Q系数
超材料
生物传感器
窃窃私语画廊
表面等离子共振
波长
光学
纳米颗粒
纳米技术
物理
病理
粒子物理学
医学
替代医学
作者
Carolin Klusmann,Radius N. S. Suryadharma,Jens Oppermann,Carsten Rockstuhl,H. Kalt
出处
期刊:Journal of The Optical Society of America B-optical Physics
[Optica Publishing Group]
日期:2017-05-19
卷期号:34 (7): D46-D46
被引量:9
标识
DOI:10.1364/josab.34.000d46
摘要
Measuring the shift in the resonance wavelength of a high-Q dielectric whispering gallery mode resonator in the presence of a modified dielectric environment is a prime sensing strategy. To improve the sensitivity, means have to be identified that push the mode profile outside the resonator to enhance its interaction with the environment. Here, we study theoretically and numerically a photonic metadevice consisting of gold nanoparticles at a high concentration deposited on top of a microdisk resonator. Careful spectral tuning of the plasmonic resonance relative to the whispering gallery mode increases the sensitivity to a notable extent at an acceptable simultaneous decrease of the quality factor. Contrary to comparable approaches that rely on thin metallic films, which require in their fabrication an unprecedented precision, our metamaterial-inspired approach is robust against fabrication imperfection as the only critical parameter is the nanoparticle density.
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