Structure fits the purpose: photonic crystal fibers for evanescent-field surface-enhanced Raman spectroscopy
Structure fits the purpose: photonic crystal fibers for evanescent-field surface-enhanced Raman spectroscopy
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DOI：
10.1364/ol.35.000466
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发表时间：
2010-02-15
期刊：
影响因子：
3.6
通讯作者：
Du, Henry
中科院分区：
文献类型：
--
作者：
Oo, Maung Kyaw Khaing;Han, Yun;Du, Henry
我们报告了三种不同空气包层微结构的折射率导向固体核光子晶体光纤（PCFs）的数值模拟和高光谱拉曼成像，以评估它们各自的倏逝场拉曼光谱潜力，重点是在整个光纤长度上实现表面增强拉曼散射（SERS）。悬浮芯PCF是三种sers活性PCF中最稳定的，它由硅芯组成，硅芯周围环绕着三个由薄硅网连接的大空气通道，在仅类似于7.3 μ L采样体积的水溶液中，其检测灵敏度为1 × 10(-10) M R6G。(C) 2010年美国光学学会
We report numerical simulation and hyperspectral Raman imaging of three index-guiding solid-core photonic crystal fibers (PCFs) of different air-cladding microstructures to assess their respective potential for evanescent-field Raman spectroscopy, with an emphasis on achieving surface-enhanced Raman scattering (SERS) over the entire fiber length. Suspended-core PCF consisting of a silica core surrounded by three large air channels conjoined by a thin silica web is the most robust of the three SERS-active PCFs, with a demonstrated detection sensitivity of 1 x 10(-10) M R6G in an aqueous solution of only similar to 7.3 mu L sampling volume. (C) 2010 Optical Society of America