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Complex relaxation rates of the Drude metals and their effects on the lifetime and symmetry of plasm
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13

Dec

2011

Hyoung-In Lee and El-Hang Lee

Optics Express, Vol. 19, Issue 11, pp. 10410-10422 (2011)
http://dx.doi.org/10.1364/OE.19.010410

» View Full Text: Acrobat PDF (1164 KB)

Abstract

The Drude model for metal is extended to include complex relaxation rates. As a test for what happens to the surface plasmon resonances with such metals, the lifetime is examined for propagating waves across a single planar metal-dielectric interface. By analytically solving the dispersion relation being fourth-order in the complex frequency, group-velocity dispersion and quality factors are explicitly found. Due to the symmetry breaking between the forward and backward waves, standing waves are not allowed in general.

 
  		 

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