期刊
APPLIED PHYSICS LETTERS
卷 97, 期 2, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.3462068
关键词
gradient index optics; lenses; metamaterials; microwave photonics; optical design techniques; optical fabrication; particle size
资金
- French National Agency (ANR) [07-P2IC-002]
- Conseil Regional de Champagne Ardenne
We here emphasize that the surface enhanced Raman scattering (SERS) intensity has to be optimized by choosing the appropriate gold nanoparticles size for two excitation wavelengths; 632.8 and 785 nm. We discuss the role of the position and of the order of the localized surface plasmon resonance (LSPR) in such optimization for both wavelengths. At 632.8 nm, the best SERS intensity is reached for a LSPR located between the excitation and Raman wavelengths whereas at 785 nm, the LSPR should be placed outside this range. The third order of LSPR is shown to have no influence on the SERS intensity. (C) 2010 American Institute of Physics. [doi:10.1063/1.3462068]
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