Two new type surface polaritons excited into nanoholes in metal films

Details Two new type surface polaritons excited into nanoholes in metal films Two new type surface polaritons excited into nanoholes in metal films

2009-12-23

arxiv.org/abs/0912.4685v5

Physics

General Physics

10 pages. Accepted on November 30, 2009 in Progress in Physics

Scientific paper

First, we argue that the smooth metal-air interface should be regarded as a distinct dielectric medium, the skin of the metal. The existence of this metal skin leads to theoretical explanation of experimental data on the excitation of electromagnetic surface shape resonances in lamellar metallic gratings by light in the visible to near-infrared range. Surface polaritons have been observed in reflection modes on metallized gratings where the electric field is highly localized inside the grooves (around 300-1000 times larger than intensity of incoming optical light). Here we present quantized Maxwell's equations for electromagnetic field in an isotropic homogeneous medium, allowing us to solve the absorption anomaly property of these metal films. The results imply the existence of light boson particles with spin one and effective mass $m= 2.5\cdot 10^{-5} m_e$. We also show the presence of two new type surface polaritons into nanoholes in metal films.

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