Optical Cavity-Enhanced Localized Surface Plasmon Resonance for High-Quality Sensing

被引：54

作者：

Chen, Jing ^{[1
,2
,3
,4
,5
,6
]}

Zhang, Qian ^{[1
,2
,3
]}

Peng, Cheng ^{[1
,2
,3
]}

Tang, Chaojun ^{[7
]}

Shen, Xueyang ^{[1
,2
,3
]}

Deng, Licheng ^{[1
,2
,3
]}

Park, Gun-Sik ^{[4
]}

机构：

[1] Nanjing Univ Posts & Telecommun, Coll Elect & Opt Engn, Nanjing 210023, Jiangsu, Peoples R China

[2] Nanjing Univ Posts & Telecommun, Coll Microelect, Nanjing 210023, Jiangsu, Peoples R China

[3] Natl & Local Joint Engn Lab RF Integrat & Microas, Nanjing 210023, Jiangsu, Peoples R China

[4] Seoul Natl Univ, Dept Phys & Astron, Ctr THz Driven Biol Syst, Seoul 151747, South Korea

[5] Southeast Univ, State Key Lab Millimeter Waves, Nanjing 210096, Jiangsu, Peoples R China

[6] Nanjing Univ, Natl Lab Solid State Microstruct, Nanjing 210093, Jiangsu, Peoples R China

[7] Zhejiang Univ Technol, Coll Sci, Collaborat Innovat Ctr Informat Technol Biol & Me, Ctr Opt & Optoelect Res, Hangzhou 310023, Zhejiang, Peoples R China

来源：

IEEE PHOTONICS TECHNOLOGY LETTERS | 2018年 / 30卷 / 08期

基金：

高等学校博士学科点专项科研基金; 中国国家自然科学基金;

关键词：

Plasmonics; Fabry-Perot cavity; ultra-narrow bandwidth; optical sensing and sensors; SENSORS; NANOPARTICLES; SENSITIVITY; SPECTROSCOPY; NANOCAVITIES; BREAKING; ARRAYS; SHAPE; SIZE;

D O I：

10.1109/LPT.2018.2814216

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

We report an effective strategy to enhance the localized surface plasmon resonances (LSPRs) of metallic nanoparticles by introducing a Fabry-Perot (FP) cavity for high-quality sensing. The concept is based on the combined excitation of LSPRs in metallic nanoparticles and optical cavity modes supported by the FP cavities, whose strong interactions result in two ultra-narrowband hybridized plasmon modes with a huge electric field enhancement. A high-quality double-band plasmonic nanosensor, with the refractive index sensitivity approaching 600 nm/RIU and a figure of merit exceeding 28 is achieved here, which suggests that the cavity-coupling strategy could offer new perspectives for achieving ultra-compact efficient biosensors.

引用

页码：728 / 731

页数：4

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