Enhancing intensity and refractive index sensing capability with infrared plasmonic perfect absorbers

Fei Cheng; Xiaodong Yang; Jie Gao

doi:10.1364/OL.39.003185

Enhancing intensity and refractive index sensing capability with infrared plasmonic perfect absorbers

Fei Cheng
, Xiaodong Yang
, Jie Gao

Mechanical Engineering

Stony Brook University

Missouri University of Science and Technology

Research output: Contribution to journal › Article › peer-review

134 Scopus citations

Abstract

An infrared refractive index sensor based on plasmonic perfect absorbers for glucose concentration sensing is experimentally demonstrated. Utilizing substantial absorption contrast between a perfect absorber (∼98% at normal incidence) and a non-perfect absorber upon the refractive index change, a maximum value of figure of merit (FOM*) about 55 and a bulk wavelength sensitivity about 590 nm?RIU are achieved. The demonstrated sensing platform provides great potential in improving the performance of plasmonic refractive index sensors and developing future surface enhanced infrared spectroscopy.

Original language	English
Pages (from-to)	3185-3188
Number of pages	4
Journal	Optics Letters
Volume	39
Issue number	11
DOIs	https://doi.org/10.1364/OL.39.003185
State	Published - Jun 1 2014

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title = "Enhancing intensity and refractive index sensing capability with infrared plasmonic perfect absorbers",

abstract = "An infrared refractive index sensor based on plasmonic perfect absorbers for glucose concentration sensing is experimentally demonstrated. Utilizing substantial absorption contrast between a perfect absorber (∼98\% at normal incidence) and a non-perfect absorber upon the refractive index change, a maximum value of figure of merit (FOM*) about 55 and a bulk wavelength sensitivity about 590 nm?RIU are achieved. The demonstrated sensing platform provides great potential in improving the performance of plasmonic refractive index sensors and developing future surface enhanced infrared spectroscopy.",

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AU - Cheng, Fei

AU - Yang, Xiaodong

AU - Gao, Jie

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N2 - An infrared refractive index sensor based on plasmonic perfect absorbers for glucose concentration sensing is experimentally demonstrated. Utilizing substantial absorption contrast between a perfect absorber (∼98% at normal incidence) and a non-perfect absorber upon the refractive index change, a maximum value of figure of merit (FOM*) about 55 and a bulk wavelength sensitivity about 590 nm?RIU are achieved. The demonstrated sensing platform provides great potential in improving the performance of plasmonic refractive index sensors and developing future surface enhanced infrared spectroscopy.

AB - An infrared refractive index sensor based on plasmonic perfect absorbers for glucose concentration sensing is experimentally demonstrated. Utilizing substantial absorption contrast between a perfect absorber (∼98% at normal incidence) and a non-perfect absorber upon the refractive index change, a maximum value of figure of merit (FOM*) about 55 and a bulk wavelength sensitivity about 590 nm?RIU are achieved. The demonstrated sensing platform provides great potential in improving the performance of plasmonic refractive index sensors and developing future surface enhanced infrared spectroscopy.

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U2 - 10.1364/OL.39.003185

DO - 10.1364/OL.39.003185

M3 - Article

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VL - 39

SP - 3185

EP - 3188

JO - Optics Letters

JF - Optics Letters

IS - 11

ER -

Enhancing intensity and refractive index sensing capability with infrared plasmonic perfect absorbers

Abstract

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