IFIBA   22255
INSTITUTO DE FISICA DE BUENOS AIRES
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
Diffraction properties of Fibonacci metallic gratings
Autor/es:
DIANA CARINA SKIGIN; RICARDO DEPINE; JUAN MONSORIU; WALTER FURLAN
Lugar:
Lima, Perú
Reunión:
Congreso; 24. VII Reunión Iberoamericana de Óptica (RIAO) y X Encuentro Latinoamericano de Óptica, Láseres y Aplicaciones (OPTILAS); 2010
Institución organizadora:
RIAO - ICO
Resumen:
The electromagnetic
diffraction from metallic surfaces having rectangular profiles has been studied
by many authors. Most of the investigations have been devoted to ideal
gratings, i.e., those strictly periodic. The Fourier spectrum of these infinite periodic structures shows a
discrete distribution of equidistant well-defined diffractions peaks. However, disordered
structures exhibit a continuous Fourier spectrum. At the intermediate regime
between ordered and totally disordered structures, aperiodic diffraction
gratings, i.e., gratings constructed
using a deterministic sequence, have characteristic spectral patterns as we
have shown recently for Fractal (Cantor) metallic gratings. In this work we analyze
the reflection properties of metallic gratings constructed using the Fibonacci
sequence. We use a rigorous electromagnetic modal method which permits to evaluate
structures with arbitrary widths and depths.