Enhancing intensity and refractive index sensing capability with infrared plasmonic perfect absorbers
Enhancing intensity and refractive index sensing capability with infrared plasmonic perfect absorbers
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DOI：
10.1364/ol.39.003185
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发表时间：
2014-06-01
期刊：
影响因子：
3.6
通讯作者：
Gao, Jie
中科院分区：
文献类型：
--
作者：
Cheng, Fei;Yang, Xiaodong;Gao, Jie
实验证明了一种基于等离子体完美吸收体的红外折射率传感器用于葡萄糖浓度传感。在折射率变化时，利用完美吸收剂（在正常入射下类似于98%）和非完美吸收剂之间的大量吸收对比，获得了约55的最优值（FOM*）和约590 nm/RIU的体波长灵敏度。该传感平台在提高等离子体折射率传感器的性能和发展未来的表面增强红外光谱方面具有很大的潜力。(C) 2014年美国光学学会
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 (similar to 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. (C) 2014 Optical Society of America