受纳米结构损伤限制的光纤拉曼探头SERS探测灵敏度

J4 ›› 2013, Vol. 30 ›› Issue (3): 348-353.

受纳米结构损伤限制的光纤拉曼探头SERS探测灵敏度

廖艳林¹,张腊梅²,刘晔²,曹杰²,毛庆和³

1 中国科学院安徽光学精密机械研究所，安徽省光子器件与材料重点实验室，安徽合肥230031； 2 安徽大学物理与材料科学学院，安徽合肥 230039； 3 中国科学技术大学, 安徽合肥 230022

收稿日期:2012-05-07 修回日期:2012-08-14 出版日期:2013-05-28 发布日期:2013-05-06
通讯作者: 毛庆和 (1963－), 研究员, 博士生导师, 主要从事微纳光子学、光纤光学、光纤激光器件等方面的研究。 E-mail:mqinghe@aiofm.ac.cn
作者简介:廖艳林 (1978－) 博士生, 主要从事微纳光子学方面的研究，E-mail: liaoyl@ahu.edu.cn
基金资助:
国家973计划（2007CB936603）、国家自然科学基金（11104282）

SERS detection sensitivity of fiber Raman probe limited by nanostructure damage threshold

Liao Yanlin， ZHANG La-mei， Liu Ye, Cao Jie, Mao Qinghe

1 Anhui Provincial Key Laboratory of Photonics Devices and Materials, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei, Anhui 230031, China； 2 School of physics and materials, Anhui University, Hefei 230039, China； 3 University of Science and Technology of China, Hefei 230022，China

Received:2012-05-07 Revised:2012-08-14 Published:2013-05-28 Online:2013-05-06

摘要/Abstract

摘要： 利用光线追迹法，研究了典型光纤拉曼探头在纳米结构损伤限制下收集到的SERS功率与样品位置之间关系，结果表明，对于不同焦距构成的同轴等光程光纤拉曼探头，在给定的纳米结构损伤阈值激发光功率密度下，样品偏离焦平面反而会使探头收集到的SERS功率增加，相比于样品远离探头方向偏离焦平面，靠近探头方向偏离焦平面时收集到的SERS功率更高。此外，收集光纤芯径越大，探头所收集的SERS功率越大。

关键词: 光谱学, 表面增强拉曼散射, 光纤拉曼探头, 损伤, 局域表面等离子振荡

Abstract: The relationship between Surface-Enhanced Raman Scattering (SERS) power collected by the fiber Raman probe and sample position is investigated theoretically under the sample damage threshold limit by using ray tracing method. The results show that, in a given damage excitation power density threshold, the SERS power collected by the probe with different focal-length lens increases when the sample deviates from the focal plane. Furthermore, compared with the situation that the sample is away from the probe and deviates from the focal plane, SERS power collected by the probe is higher at the situation that the sample is close to the probe and deviates from the focal plane. In addition, the lager the collection fiber core diameter is, the greater the power collected by the probe is.

Key words: spectroscopy, surface-enhanced Raman scattering, fiber Raman probe, damage, localized surface plasmon resonance

中图分类号:

TN248.1

廖艳林张腊梅刘晔曹杰毛庆和. 受纳米结构损伤限制的光纤拉曼探头SERS探测灵敏度[J]. J4, 2013, 30(3): 348-353.

Liao Yanlin， ZHANG La-mei， Liu Ye, Cao Jie, Mao Qinghe. SERS detection sensitivity of fiber Raman probe limited by nanostructure damage threshold[J]. J4, 2013, 30(3): 348-353.

参考文献

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