Optical attenuation across a metal grid

Michael M. Tilleman

doi:10.1117/12.916670

6 March 2012 Optical attenuation across a metal grid

Michael M. Tilleman

Proceedings Volume 8257, Optical Components and Materials IX; 82570N (2012) https://doi.org/10.1117/12.916670
Event: SPIE OPTO, 2012, San Francisco, California, United States

Abstract

Flux of electromagnetic radiation is attenuated on propagation through a metal grid disposed on a substrate. The magnitude of extinction is a combination of the total scattering and surface plasmon absorption, which is predicted by the Mie theory adapted to the case at hand. Experimental measurements over a wide wavelength range conducted using a metal grid on a sapphire window support the calculations. Further analyzed is the electric field generated in the wire mesh, treated by the Drude-Lorentz theory. While the analysis and data show that the attenuation across a window covered by a wire mesh is consists of a combination of the Fresnel and Mie losses, a considerable plasmon field is generated in the wire.

Citation Download Citation

Michael M. Tilleman "Optical attenuation across a metal grid", Proc. SPIE 8257, Optical Components and Materials IX, 82570N (6 March 2012); https://doi.org/10.1117/12.916670

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