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arXiv 0912.4138physics.optics
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基于圆布喇格现象光谱位移的光学传感经验模型

Empirical model of optical sensing via spectral shift of circular Bragg phenomenon

Tom G. Mackay, Akhlesh Lakhtakia

摘要:

建立了一个利用手性雕塑薄膜(CSTFs)所表现出的圆布拉格现象的光学传感的经验模型,考虑了有和没有$π/2$弧度的中心扭曲缺陷的CSTFs。无缺陷的CSTF的圆布拉格现象,和光谱孔的CSTF与扭曲缺陷的共偏振反射光谱中,都被发现是尖锐的流体的折射率的infiltering的CSTF的空隙区域的敏感。这些发现预示着CSTF作为光学传感器的部署。

英文摘要:

Setting up an empirical model of optical sensing to exploit the circular Bragg phenomenon displayed by chiral sculptured thin films (CSTFs), we considered a CSTF with and without a central twist defect of $π/2$ radians. The circular Bragg phenomenon of the defect-free CSTF, and the spectral hole in the co-polarized reflectance spectrum of the CSTF with the twist defect, were both found to be acutely sensitive to the refractive index of a fluid which infiltrates the void regions of the CSTF. These findings bode well for the deployment of CSTFs as optical sensors.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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