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Theory of enhanced Raman scattering for circular stratified semiconductor cylinder
Hui Wang1, Min Feng, Xuewei Cao
1Department of Physics, Nankai University, Tianjin 300071, People's Republic of China.
Abstract:
Based on the electrodynamic theory, we have calculated the scattering fields of infinitely long dielectric nanocylinders with silver coating, and compared them with those of a pure silicon cylinder. The calculation result indicates that there exists an enhanced electric field in the silver-coated silicon nanocylinder and shows a great Raman enhancement factor (∼10(12)) as compared with bulk silicon. For a special area in the silver-coated silicon nanocylinder, the enhancement comes up to 4 × 10(13).
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