Surface-plasmon band-gaps observed in the diffuse background of metallic gratings

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Due to the excitation of surface plasmons, the diffuse background of a microrough metallic grating can present intensity maxima called diffuse light bands. We reexamine this phenomenon within the framework of recent studies on photonic surfaces and show that it provides an experimental technique for...

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Detalles Bibliográficos
Autores principales: Depine, R.A., Ledesma, S., Marcano O. A., Paz J.L.
Formato: CONF
Materias:
Diffraction gratings
Rough surfaces
Roughness
Scattering
Surface plasmons
Diffusers (optical)
Polarization
Refractive index
Scattering parameters
Surface roughness
Vectors
Band gaps
Dispersion relation
Metallic gratings
Surface plasmons (SP)
Surface plasmon resonance
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_0277786X_v5622_nPART1_p481_Depine
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
Descripción
Sumario:Due to the excitation of surface plasmons, the diffuse background of a microrough metallic grating can present intensity maxima called diffuse light bands. We reexamine this phenomenon within the framework of recent studies on photonic surfaces and show that it provides an experimental technique for mapping the dispersion relation of surface plasmons, including the gap that, under appropriate circumstances, opens up in the reciprocal grating space.

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