Artículos de revistas
Angular dependence of the intensity of light beams diffracted by colloidal crystals
Fecha
2010-07Registro en:
Lozano, Gabriel; Mazzaferri, Javier E.; Dorado, Luis Antonio; Ledesma, Silvia Adriana; Depine, Ricardo Angel; et al.; Angular dependence of the intensity of light beams diffracted by colloidal crystals; Optical Society Of America; Journal Of The Optical Society Of America B-optical Physics; 27; 7; 7-2010; 1394-1399
0740-3224
Autor
Lozano, Gabriel
Mazzaferri, Javier E.
Dorado, Luis Antonio
Ledesma, Silvia Adriana
Depine, Ricardo Angel
Míguez, Hernán
Resumen
An experimental and theoretical analysis of the angular dependence of the diffracted light beams emerging from three-dimensional colloidal photonic crystals is herein presented. Diffracted beams are identified according to their associated reciprocal-lattice vectors, and their intensities are obtained as a function of the zenithal and azimuthal incidence angles. Significant changes in the beam intensities are observed for large zenithal incidence angles as the azimuthal angle is varied. This phenomenon is related to the excitation of new resonant modes inside the photonic crystal which cannot be observed under normal incidence conditions.