Structure fits the purpose: photonic crystal fibers for evanescent-field surface-enhanced Raman spectroscopy.
作者： Maung Kyaw Khaing Oo , Yun Han , Jiri Kanka , Svetlana Sukhishvili , Henry Du
DOI: 10.1364/OL.35.000466
关键词: Raman scattering 、 Fiber 、 Photonic-crystal fiber 、 Materials science 、 Raman spectroscopy 、 Optics 、 Optical fiber 、 Nanomaterials 、 Core (optical fiber) 、 Surface-enhanced Raman spectroscopy
摘要: We report numerical simulation and hyperspectral Raman imaging of three index-guiding solid-core photonic crystal fibers (PCFs) different air-cladding microstructures to assess their respective potential for evanescent-field spectroscopy, with an emphasis on achieving surface-enhanced scattering (SERS) over the entire fiber length. Suspended-core PCF consisting a silica core surrounded by large air channels conjoined thin web is most robust SERS-active PCFs, demonstrated detection sensitivity 1x10(-10) M R6G in aqueous solution only approximately 7.3 microL sampling volume.
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