Angular dependence of the intensity of light beams diffracted by colloidal crystals

被引:3
|
作者
Lozano, Gabriel [1 ]
Mazzaferri, Javier E. [2 ]
Dorado, Luis A. [3 ]
Ledesma, Silvia [2 ]
Depine, Ricardo A. [3 ]
Miguez, Hernan [1 ]
机构
[1] Consejo Super Invest Cientif, Inst Ciencia Mat Sevilla, Seville, Spain
[2] Univ Buenos Aires, Lab Procesado Imagenes, Dept Fis, Fac Ciencias Exactas & Nat, RA-1053 Buenos Aires, DF, Argentina
[3] Univ Buenos Aires, Grp Elect Aplicado, Dept Fis, Fac Ciencias Exactas & Nat, RA-1053 Buenos Aires, DF, Argentina
关键词
3-DIMENSIONAL PHOTONIC CRYSTALS; OPTICAL-RESPONSE; FILMS; SPECTROSCOPY; TRANSMISSION; REGION;
D O I
10.1364/JOSAB.27.001394
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
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. (C) 2010 Optical Society of America
引用
收藏
页码:1394 / 1399
页数:6
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