| 波长检测型表面等离子体共振传感器的实验研究 |
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| 引用本文： | 吴平辉,顾菊观,刘彬,隋成华.波长检测型表面等离子体共振传感器的实验研究[J].激光与光电子学进展,2012(2):152-155. |
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| 作者姓名： | 吴平辉 顾菊观 刘彬 隋成华 |
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| 作者单位： | 湖州师范学院理学院;浙江工业大学激光与光电子技术研究所 |
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| 基金项目： | 湖州师范学院2011年校级科研项目(201140);浙江省教育厅重点资助项目(Z201018276)资助课题 |
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| 摘 要： | 介绍了表面等离子体共振(SPR)传感器的工作原理,设计了一套基于波长检测型Kretschmann结构的SPR传感测试系统。通过固定入射光角度,以波长为变量,测定了10种不同浓度的乙醇水溶液折射率与共振波长之间的对应关系。实验结果表明,共振波长随着样品折射率的增大而逐渐向长波长方向偏移,且两者之间呈现良好的线性关系。通过对共振光谱的分析,实现对未知溶液折射率或者浓度的测定。整个传感器系统具有结构紧凑、操作简单、实时检测和测量准确等优点。
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| 关 键 词： | 传感器 表面等离子体共振 共振波长 折射率 |
Experimental Research on Wavelength Modulation Surface Plasmon Resonance Sensor |
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| Wu Pinghui,Gu Juguan,Liu Bin,Sui Chenghua.Experimental Research on Wavelength Modulation Surface Plasmon Resonance Sensor[J].Laser & Optoelectronics Progress,2012(2):152-155. |
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| Authors: | Wu Pinghui Gu Juguan Liu Bin Sui Chenghua |
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| Affiliation: | 1 School of Science,Huzhou Teachers College,Huzhou,Zhejiang 313000,China 2 Institute of Laser and Optoelectronic Technology,Zhejiang University of Technology,Hangzhou,Zhejiang 310023,China) |
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| Abstract: | The principle of surface plasmon resonance(SPR) sensor is introduced.A SPR measurement system with Kretschmann configuration is designed based on wavelength modulation technology.The relationship between refractive index and resonance wavelength for ten different concentrations of alcohol solution is measured by detecting the light intensity reflectivities with fixing the incident angle while changing the wavelength.Experimental results show that the resonance wavelength increases with increasing sample refractive index,exhibiting good linearity.The SPR sensor can realize the measurement of refractive index or concentration of unknown solution by analyzing the resonant spectrum.The SPR sensor demonstrated here is featured with compact structure,simple operation,accurate and real time measurement. |
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| Keywords: | sensor surface plasmon resonance resonance wavelength refractive index |
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