TY - JOUR
T1 - Focusing analysis of a complex photonic crystal slab with negative refraction
AU - Wang, Hung Wen
AU - Wu, Mei Ling
AU - Chen, Lien Wen
N1 - Funding Information:
The partial support by the National Science Council of Taiwan , Taiwan, under Grant NSC96-2221-E-006-212-MY3 is gratefully acknowledged.
PY - 2010/10/1
Y1 - 2010/10/1
N2 - The electromagnetic wave propagation in a two-dimensional (2D) complex triangular photonic crystal (PC) consisting of dielectric cylinders of different radii in air is investigated. The plane wave expansion (PWE) and finite element (FE) methods are used to study the optical and focusing properties of the complex PC. Interestingly, in contrast to a triangular PC consisting of dielectric cylinders of the same radius, the complex PC can generate a focusing effect with an effective refractive index of -1. Furthermore, a design is proposed using antireflection structures to enhance the transmission efficiency of light at the interfaces between the air and the PC slab. Numerical simulations show that appropriately adding antireflection structures to the surface of the slab can greatly improve the focusing resolution. Crown
AB - The electromagnetic wave propagation in a two-dimensional (2D) complex triangular photonic crystal (PC) consisting of dielectric cylinders of different radii in air is investigated. The plane wave expansion (PWE) and finite element (FE) methods are used to study the optical and focusing properties of the complex PC. Interestingly, in contrast to a triangular PC consisting of dielectric cylinders of the same radius, the complex PC can generate a focusing effect with an effective refractive index of -1. Furthermore, a design is proposed using antireflection structures to enhance the transmission efficiency of light at the interfaces between the air and the PC slab. Numerical simulations show that appropriately adding antireflection structures to the surface of the slab can greatly improve the focusing resolution. Crown
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U2 - 10.1016/j.physb.2010.07.005
DO - 10.1016/j.physb.2010.07.005
M3 - Article
AN - SCOPUS:77957117210
VL - 405
SP - 4157
EP - 4162
JO - Physica B: Condensed Matter
JF - Physica B: Condensed Matter
SN - 0921-4526
IS - 19
ER -