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表面增强拉曼散射(SERS)功率与样品位置之间的关系.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.
参考文献
| [1] | Casiraghi C,Pisana S,Novoselov K S,et al.Raman fingerprint of charged impurities in graphene[J].Appl.Phys.Lett.,2007,91(3):233108-233110. |
| [2] | Klimov E,Li W,Yang X,et al.Chemical reaction imaging within microfluidic devices using confocal Raman spectroscopy:The case of water and deuterium oxide as a model system[J].Anal.Chem.,2008,80(5):1689-1695. |
| [3] | Fiedler A,Baranska M,Schulz H.FT-Raman spectroscopy-a rapid and reliable quantification protocol for the determination of natural indigo dye in polygonum tinctorium[J].J.Raman Spectrosc.,2010,42(2):551-557. |
| [4] | Zhang Y Y,Zhang X F,Cao J,et al.Decanethiol-modified Au/Ag SERS substrates for detection of polychlorinated biphenyl-77[J].Chinese Journal of Quantum Electronics(量子电子学报),2012,29(3):357-361 (in Chinese). |
| [5] | Zheng R S,Lu Y H,et al.Recent progress of research on surface plasmon resonance sensors[J].Chinese Journal of Quantum Electronics(量子电子学报),2008,25(6):657-664 (in Chinese). |
| [6] | Samuel L K,Emilie R,Nicholas V,et al.Single-molecule surface-enhanced Raman spectroscopy of crystal violet isotopologues:theory and experiment[J].J.Am.Chem.Soc.,2011,133(11):4115-4122. |
| [7] | Winterhalder M J,Zumbusch Lippitz A M,Orrit M.Toward far-field vibrational spectroscopy of single molecules at room temperature[J].J.Phys.Chem.B,2011,115(18):5425-5430. |
| [8] | John R L,Ronald L B.Single molecule SERS spectral blinking and vibronic coupling[J].J.Phys.Chem.C,2011,115(11):4540-4545. |
| [9] | Paul I O,Michael D M.Polymer-capped fiber-optic Raman probe for non-invasive Raman spectroscopy[J].Analy.,2012,137(1):77-81. |
| [10] | Pentti N,Janne S.Rugged fiber-optic Raman probe for process monitoring applications[J].Appl.Spectrosc.,2001,55(2):1337-1340. |
| [11] | Nick G,Susan C,Steele D,et al.Double-ended calibration of fiber-optic Raman spectra distributed temperature sensing data[J].Sens.,2012,12(5):5471-5485. |
| [12] | Dejesu M A S,Giesfeldt K S,Sepaniak M J.Use of a sample translation technique to minimize adverse effects of laser irradiation in surface-enhanced Raman spectrometry[J].Appl.Spectrosc.,2003,57(9):428-438. |
| [13] | Maier S A.Plasmonics:Fundamentals and Applications[M].New York:Springer,2006. |
| [14] | Baltog I,Primeau N,Reinisch R.Surface enhanced Raman scattering on silver grating:Optimized antennalike gain of the Stokes signal of 104[J].Appl.Phys.Lett.,1995,66(10):1187-1189. |
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