等离子体共振传感中红外完美吸收器的性能改进

2012 12th International Conference on Numerical Simulation of Optoelectronic Devices (NUSOD) Pub Date : 2012-10-02 DOI:10.1109/NUSOD.2012.6316516

G. H. Li, X. Wu, Y. Jiang, C. Shao, L. J. Huang, X. Chen, W. D. Hu, W. Lu

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引用次数: 1

摘要

我们提出了一种结合金纳米棒和光子微腔的红外完美吸收体。通过调整结构几何形状，该器件可用于折射率传感。设计合理的结构参数，在近红外波段吸光度可达99%以上。我们的工作直接研究了几何形状对传感性能的影响，它可以作为纳米颗粒内部局部表面等离子体激元与沿平面金属层传播表面等离子体激元之间耦合的模型，用于具有完美吸收体的传感应用。

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The improvement of figure of merit with infrared perfect absorber for plasmonic resonance sensing

We present an infrared perfect absorber which combines gold nanobars and a photonic microcavity. By adjusting the structural geometry, this device is utilized for refractive index sensing. For proper designed structural parameters, it can yield more than 99% absorbance in the near-infrared frequency regime. Our work directly investigate the effect of geometry on sensing performance and it can sever as a model of coupling between localized surface plasmon within nanoparticles and propagating surface plasmon along planar metal layer for sensing applications with a perfect absorber.

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来源期刊

2012 12th International Conference on Numerical Simulation of Optoelectronic Devices (NUSOD)

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