Surface plasmons leaky radiation of the flat metal

Ping Wang; Dejiao Hu; Lin Pang

doi:10.1117/12.2187302

28 August 2015 Surface plasmons leaky radiation of the flat metal

Ping Wang, Dejiao Hu, Lin Pang

Author Affiliations +

Proceedings Volume 9547, Plasmonics: Metallic Nanostructures and Their Optical Properties XIII; 95472Q (2015) https://doi.org/10.1117/12.2187302
Event: SPIE Nanoscience + Engineering, 2015, San Diego, California, United States

Abstract

Surface plasmons have been widely investigated in many fields due to the unique property. ATR (attenuated totalreflection) is the common method to excite surface plasmons. We derive the Fano-type analysis to present the reflection spectrum of ATR configuration derived from the three-layer Fresnel reflection equation, which are asymmetric curves resulted from interference between direct reflectance and surface plasmons leaky radiation. In the fitting progress, we obtain the relationship between surface plasmons leaky radiation and metal thickness. When the metal thickness is greater than 25nm, surface plasmons leaky radiation rate is less than 0.07. We also compare the ATR and grating coupler excitement mechanism, which provide a reference to evaluate their application.

Citation Download Citation

Ping Wang, Dejiao Hu, and Lin Pang "Surface plasmons leaky radiation of the flat metal", Proc. SPIE 9547, Plasmonics: Metallic Nanostructures and Their Optical Properties XIII, 95472Q (28 August 2015); https://doi.org/10.1117/12.2187302

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