Application of strong transverse magneto-optical Kerr effect on high sensitive surface plasmon grating sensors

被引：20

作者：

Chou, Kuei-Hsu ^{[1
]}

Lin, En-Ping ^{[1
]}

Chen, Te-Chang ^{[1
]}

Lai, Chih-Huang ^{[2
]}

Wang, Liang-Wei ^{[2
]}

Chang, Ko-Wei ^{[3
]}

Lee, Gwo-Bin ^{[3
]}

Lee, Ming-Chang M. ^{[1
]}

机构：

[1] Natl Tsing Hua Univ, Inst Photon Technol, Hsinchu, Taiwan

[2] Natl Tsing Hua Univ, Dept Mat Sci & Engn, Hsinchu, Taiwan

[3] Natl Tsing Hua Univ, Dept Power Mech Engn, Hsinchu, Taiwan

来源：

OPTICS EXPRESS | 2014年 / 22卷 / 16期

关键词：

Coherent scattering - Optical Kerr effect - Sodium chloride - Surface plasmon resonance - Electromagnetic wave polarization - Glycoproteins - Object detection;

D O I：

10.1364/OE.22.019794

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A high sensitive sensor is demonstrated by exploiting strong transverse magneto-optical Kerr effect on a ferromagnetic surface plasmon grating. The surface plasmon grating, made of a hybridized Au/Fe/Au layer, exhibits a very dispersive Kerr parameter variation near the surface plasmon polariton (SPP) wavelength via coherent scattering of the SPP on the grating structure. Interrogating this Kerr parameter can be utilized for detecting chemical or biological objects in a fluid medium. The experiment results show the minimal detectable mass concentration of sodium chloride in a saline solution is 4.27 x 10(-3)%, corresponding to a refractive index change of 7.60 x 10(-6) RIU. For an avidin-biotin interaction experiment, the sensitivity of avidin detection in PBS solution is 1.97 nM, which is limited by the index fluctuation of flowing media during measurement. (C) 2014 Optical Society of America

引用

页码：19794 / 19802

页数：9

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