Open AccessLarger bandgaps of two-dimensional triangular photonic crystals fabricated by holographic lithography can be realized by recording geometry design
Author(s) -
Xiulun Yang,
Lutong Cai,
Y. R. Wang
Publication year - 2004
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/opex.12.005850
Subject(s) - photonic crystal , lithography , holography , optics , hexagonal lattice , materials science , photonic bandgap , photonics , band gap , lattice (music) , electron beam lithography , yablonovite , geometry , optoelectronics , physics , photonic integrated circuit , condensed matter physics , resist , nanotechnology , mathematics , layer (electronics) , antiferromagnetism , acoustics
The photonic band gap (PBG) properties of two classes of two-dimensional (2-D) triangular lattice fabricated by holographic lithography are investigated numerically. The effect of intensity threshold on the filling ratio and then the shape of "atoms", and the corresponding photonic gap are comprehensively studied. Our results show that the recording geometry for a given 2-D triangular lattice is not unique, and this fact gives us more freedom in choosing proper recording geometry to obtain larger bandgap.