基于SERS光纤探针近场喇曼光谱检测研究  

Study of near-field Raman spectroscopy detection based on SERS fiber probe

作　　者：陈振宜[1] 郑潇 陈娜[1] 刘书朋[1] 包晓杰 商娅娜[1] CHEN Zhenyi;ZHENG Xiao;CHEN Na;LIU Shupeng;BAO Xiaojie;SHANG Yana(Key Laboratory of Specialty Fiber Optics and Optical Access Networks, Shanghai University, Shanghai 200444, China)

机构地区：[1]上海大学特种光纤与光接入网省部共建重点实验室

出　　处：《光通信技术》2019年第8期55-58,共4页Optical Communication Technology

基　　金：国家自然科学基金项目资助(61475095、61675125、61575120、61875118)资助;上海大学特种光纤与光接入网重点实验室开放项目(SKLSFO2017-02、SKLSFO2018-5)资助

摘　　要：为了提高传统喇曼光谱显微技术的光学分辨率,实现待测样品纳米尺度的组分分析,近场光学技术被广泛用于喇曼光谱检测中.基于表面增强喇曼散射(SERS)光纤探针的近场喇曼光谱检测技术,将扫描探针显微技术和喇曼光谱分析技术相结合,通过控制SERS光纤探针对多模光纤端面上样品的扫描,以获得被测样品的近场喇曼成像.利用罗丹明(R6G)试剂对SERS光纤探针的近场喇曼检测性能进行表征,其最低检测浓度达10-7 mol/L,并实验测得了R6G浓度为10-5 mol/L的近场喇曼光谱成像,由此表明SERS光纤探针具有近场喇曼光谱成像能力.In order to improve the optical resolution of traditional Raman spectroscopic microscopy and achieve nano-scale component analysis of the sample to be measured, near-field optical technology is widely used in Raman spectroscopy detection. Based on the near-field Raman spectroscopy detection technology of surface-enhanced Raman scattering (SERS) fiber probe, scanning probe microscopy and Raman spectroscopy analysis technology are combined to obtain near-field Raman imaging of measured samples by controlling the scanning of multimode fiber end samples by SERS fiber probe. The near-field Raman detection performance of SERS optical fiber probe is characterized by Rhodamine (R6G) reagent. The lowest detection concentration is 10-7 mol/L. The near-field Raman spectroscopic imaging with R6G concentration of 10-5 mol/L is measured experimentally, which indicated that SERS optical fiber probe had near-field Raman spectroscopic imaging ability.

关 键 词：光纤探针 喇曼光谱 表面增强喇曼散射 近场喇曼 光谱成像 

分 类 号：TN256[电子电信—物理电子学]