Optical Nonlinearities of Fractal Composites

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• 作者：Vladimir M. Shalaev
• 刊名：Topics in Applied Physics
• 出版年：2002
• 出版时间：2002
• 年：2002
• 卷：82
• 期：1
• 页码：p.93
• 全文大小：598 KB
• 刊物类别：Springer Berlin / Heidelberg
• 刊物主题：Physics
  Magnetism and Magnetic Materials
  Optical and Electronic Materials
  Laser Technology and Physics and Photonics
  Quantum Computing, Information and Physics
  Applied Optics, Optoelectronics and Optical Devices
  Solid State Physics and Spectroscopy
  Condensed Matter
  
• 出版者：Springer Berlin / Heidelberg

文摘

A theory of optical responses in fractal nanostructured composite materials is outlined. It is shown that the fractal geometry results in localization of plasmon excitations in the “hot” spots, where the local field can exceed the applied field by several orders of magnitude. The high local fields of the localized fractal modes result in dramatic enhancement of optical responses, making surface-enhanced spectroscopy of single molecules and nanocrystals feasible.