High sensitivity of surface plasmon of weakly-distorted metallic surfaces

Wei Chih Liu*

*此作品的通信作者

研究成果: 雜誌貢獻期刊論文同行評審

12 引文 斯高帕斯(Scopus)

摘要

Effects of nano-scale surface geometry on surface plasmon are studied by the coordinate-transformation differential method to numerically calculate surface plasmon modes on a weakly disordered metallic surface. An air-silver surface profile with a subwavelength period and a nano-scale height at wavelength of 650 nm are chosen and it is found that the Bloch wave numbers and the surface plasmon modes are highly sensitive with distortions of only a few nanometers for periods much less than wavelength. On the contrary, distortions of long periods which are comparable to wavelength have little impact. Three typical surface profiles exhibit surface plasmon modes of wide variations.

原文英語
頁(從 - 到)9766-9773
頁數8
期刊Optics Express
13
發行號24
DOIs
出版狀態已發佈 - 2005 十一月 28

ASJC Scopus subject areas

  • 原子與分子物理與光學

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