The dispersion of two-dimensional photonic bands is measured by variable-angle reflectance on macroporous silicon photonic crystals. The dispersion is derived from the position of critical-point-like structures in optical spectra. A comparison between experimental and calculated reflectance shows a very good agreement. The same is found between the photonic bands obtained by plane-wave expansion and the experimental ones. A symmetry analysis yelds the selection rules for excitation of photonic modes at the Brillouin zone center and along the symmetry lines
Spectroscopy of photonic bands in two-dimensional macroporous silicon photonic crystals
Bettotti, Paolo;Lui, Alberto;Bellutti, Pierluigi
2001-01-01
Abstract
The dispersion of two-dimensional photonic bands is measured by variable-angle reflectance on macroporous silicon photonic crystals. The dispersion is derived from the position of critical-point-like structures in optical spectra. A comparison between experimental and calculated reflectance shows a very good agreement. The same is found between the photonic bands obtained by plane-wave expansion and the experimental ones. A symmetry analysis yelds the selection rules for excitation of photonic modes at the Brillouin zone center and along the symmetry linesFile in questo prodotto:
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