Fiber Raman background study and its application in setting up optical fiber Raman probes.
Fiber Raman background study and its application in setting up optical fiber Raman probes.
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DOI：
10.1364/ao.35.002527
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发表时间：
1996-05
期刊：
影响因子：
1.9
通讯作者：
Jiaying Ma;Ying-Sing Li
中科院分区：
文献类型：
--
作者：
Jiaying Ma;Ying-Sing Li
研究并比较了不同类型熔融石英纤维的拉曼背景光谱。结果表明：(a)无论包层材料和缓冲材料的不同，所有背景光谱都与熔融二氧化硅的拉曼光谱非常相似，具有可比性；(b)总背景强度随光纤数值孔径增大而增大，但与纤芯直径无明显关系。这些观点都得到了实验证据和理论解释。构造了一种用于低光纤拉曼背景干扰下表面增强拉曼散射检测的简单无滤波光纤探头，并根据背景研究结果对探头的最佳配置进行了建议和讨论。
Fiber Raman background spectra of different types of fused-silica fibers are studied and compared. The results show the following: (a) all the background spectra are very similar and comparable with Raman spectra of fused silica, regardless of the difference in the cladding and buffer materials; (b) the overall background intensity increases with the fiber numerical aperture but has no obvious relation with the core diameter. Both experimental evidence and theoretical explanation have been provided for these views. A simple and unfiltered fiber probe for surface-enhanced Raman scattering detection with low fiber Raman background interference is constructed, and the optimum configuration of the probe is suggested and discussed based on the results of the background study.