Surface-enhanced second-harmonic generation and Raman scattering

Journal Article · Tue Feb 15 04:00:00 EST 1983 · Phys. Rev. B: Condens. Matter; (United States)

DOI:https://doi.org/10.1103/PhysRevB.27.1965· OSTI ID:6265177

Chen, C K; Heinz, T F; Ricard, D; Shen, Y R

Emission from a variety of surface optical processes is significantly increased at interfaces with roughened noble metals. A general formalism, applicable to any optical process, is used to predict the enhancement in the radiated power for second-harmonic generation and Raman scattering from an electrochemically reformed silver surface. Experimental results for these enhancements at different wavelengths are reported. The intensity of the second-harmonic radiation can be understood strictly in terms of the strong macroscopic electric fields produced at the roughened surface by resonant structures. For Raman scattering, part of the enhancement also arises from microscopic local-field effects and the direct chemical interaction of the adsorbate and substrate. The surface-enhanced second-harmonic and Raman signals are studied as the silver sample undergoes oxidation and reduction in an electrolyte containing cyanide ions. The behavior of these two easily measurable probes is described and correlated with the system's surface chemistry.

• Research Organization: Department of Physics, University of California, Berkeley, California 94720
• OSTI ID: 6265177
• Journal Information: Phys. Rev. B: Condens. Matter; (United States), Journal Name: Phys. Rev. B: Condens. Matter; (United States) Vol. 27:4; ISSN PRBMD
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360104* -- Metals & Alloys-- Physical Properties
ADSORBENTS
AUGMENTATION
AZINES
CHEMICAL REACTIONS
ELECTRIC FIELDS
ELEMENTS
HARMONICS
HETEROCYCLIC COMPOUNDS
METALS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
OSCILLATIONS
OXIDATION
PYRIDINE
PYRIDINES
RAMAN EFFECT
REDUCTION
ROUGHNESS
SCATTERING
SILVER
SURFACE PROPERTIES
SURFACE TREATMENTS
TRANSITION ELEMENTS