Efficiency of optical sensing by a plasmonic photonic-crystal slab

被引:40
|
作者
Baryshev, A. V. [1 ,2 ]
Merzlikin, A. M. [1 ,3 ]
Inoue, M. [4 ]
机构
[1] Toyohashi Univ Technol, Elect Inspired Interdisciplinary Res Inst, Toyohashi, Aichi 4418580, Japan
[2] AF Ioffe Phys Tech Inst, St Petersburg 194021, Russia
[3] Inst Theoret & Appl Electromagnet, Moscow 125412, Russia
[4] Toyohashi Univ Technol, Dept Elect & Elect Informat Engn, Toyohashi, Aichi 4418580, Japan
基金
日本学术振兴会;
关键词
RESONANCE SENSORS; SURFACE-WAVES; EXCITATION; BIOSENSOR; ELISA;
D O I
10.1088/0022-3727/46/12/125107
中图分类号
O59 [应用物理学];
学科分类号
摘要
A one-dimensional photonic crystal with termination by a noble metal film-a plasmonic photonic-crystal slab-is theoretically analysed for its optical response at the variation of the dielectric permittivity of an analyte. A sharp attenuation peak associated with a 'noble metal-visualized' Bloch surface wave is observed due to plasmon absorption in the metal. We investigate the sensing performance of the slab and show that it is tolerant to the variation of probing conditions and the slab's structural parameters. As a consequence, the considered sensor exhibits an enhanced sensitivity and good robustness in comparison with conventional surface-plasmon and Bloch surface wave sensors.
引用
收藏
页数:5
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