SURFACE-ENHANCED RAMAN SCATTERING AT EXTREMELY HIGH ENHANCEMENT LEVEL——APPLICATION TO RAMAN STUDIES OF SINGLE MOLECULES AND OF SINGLE-WALLED CARBON NANOTUBES
作者单位：George R. Harrison Spectroscopy LaboratoryDepartment of PhysicsTechnical University of Berlin Francis Bitter Magnet Laboratory Department of PhysicsDepartment of Electrical Engineering and Computer ScienceMassachusetts Institute of Technology
会议名称：《The International Symposium on Progress in Suface Raman Spectroscopy--Theory, Techniques and Applications》
会议日期：2000年
学科分类：070207[理学-光学] 07[理学] 08[工学] 0803[工学-光学工程] 0702[理学-物理学]
摘 要：Extremely large effective non-resonant Raman cross sections up to 10～10cm per molecule corresponding to enhancement factors on the order of 10 can be obtained at near infrared excitation for molecules attached to aggregated colloidal silver or gold particles. We confirmed the existence of these enormous Raman cross sections by observation of significant transfer of ground state population to the first excited vibrational state by spontaneous surface-enhanced Raman scattering. Evidence for this population pumping by spontaneous Raman scattering includes (i) anti-Stokes to