Study on the Despeckle Methods in Angular Surface Plasmon Resonance Imaging Sensors

Study on the Despeckle Methods in Angular Surface Plasmon Resonance Imaging Sensors
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角表面等离子体共振成像传感器去散斑方法的研究

DOI:
10.1007/s11468-014-9859-0
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发表时间:
2015-06
期刊:
影响因子:
3
通讯作者:
Jihua Guo
Jihua Guo
中科院分区:
物理与天体物理3区
文献类型:
--
作者:
Yonghong He;Pengfei Zhang;Yilong Zhang;Jihua Guo

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角表面等离子体共振(SPR)成像传感器具有线性范围宽、折射率分辨率高、结构简单等优点,由于激光光源的相干性引起的散斑效应制约了SPR成像传感器的性能。在这项工作中,我们实验研究了两种常见的散斑方法(带有旋转漫射器的激光和非相干光发射二极管(LED)光源)对角度SPR成像传感器RI分辨率的影响。我们发现,带通滤光片的LED光源不仅可以完全消除散斑效应,而且可以提供比其他散斑方法更好的RI分辨率。这种低成本的无相干斑方法有可能促进角度SPR成像传感器的发展和产业化。
The speckle effects caused by the coherence of the laser light sources have restricted the performances of angular surface plasmon resonance (SPR) imaging sensors, which are widely used due to their wide linear rage, high refractive index (RI) resolution, and simple structure. In this work, we experimentally studied the influence of two common despeckle methods (laser with a rotating diffuser and an incoherent light-emitting diodes (LED) light source) on the RI resolution of an angular SPR imaging sensor. We found that the LED light source with a band-pass filter could not only eliminate the speckle effect completely but also provide better RI resolution than the other despeckle method. This low-cost speckle-free method has the potential to promote the development and the industrialization of angular SPR imaging sensors.
DOI: 10.1002/pmic.200400879
发表时间: 2004-11
期刊: PROTEOMICS
影响因子: 3.4
作者:
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