Open AccessBand gap of hexagonal 2D photonic crystals with elliptical holes recorded by interference lithography
Author(s) -
F. Quiñónez,
J. W. Menezes,
Lucila Cescato,
V. F. Rodríguez-Esquerre,
H.E. Hernández-Figueroa,
Ronaldo Domingues Mansano
Publication year - 2006
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.14.004873
Subject(s) - optics , hexagonal crystal system , materials science , photonic crystal , lithography , interference lithography , polarization (electrochemistry) , interference (communication) , electron beam lithography , photonics , physics , fabrication , resist , nanotechnology , medicine , channel (broadcasting) , chemistry , alternative medicine , pathology , layer (electronics) , crystallography , electrical engineering , engineering
Two-dimensional hexagonal photonic crystals can be recorded using the simple superimposition of two interference patterns rotated by 60 masculine. Such process generates high contrast masks, however, it generates elliptical cross section structures instead of cylinders. We study the PBG properties of the experimentally feasible geometries, using this technique and we demonstrate that the effect of this asymmetric shape is a reduction in the PBG map area, for TE polarization, in comparison with cylindrical structures. On the other hand, it appears a PBG for TM polarization.