https://doi.org/10.1051/epjap/2011009402
Influence factors of polarization-independent focusing by octagonal photonic quasicrystal
1
College of Precision Instrument and Opto-electronics Engineering, Key Laboratory of Opto-electronics Information Technology (Tianjin University), Ministry of Education, Tianjin, 300072, P.R. China
2
College of Science, Tianjin University of Science & Technology, Tianjin, 300222, P.R. China
Corresponding author: renkun@tju.edu.cn
Received:
28
October
2009
Revised:
18
June
2010
Accepted:
8
February
2011
Published online:
13
April
2011
The focusing property of electromagnetic wave is investigated by a flat slab made of octagonal photonic quasicrystal. We obtain polarization-independent focusing by use of the all-dielectric photonic quasicrystal. The influence of geometrical factors of photonic quasicrystal on the focusing property for TM and TE polarizations is explored in detail. The results show that two orthogonal polarizations have a common focus point only under certain proper condition. Our results may be a useful guidance for the fabrication of lens devices capable of polarization-independent focusing by photonic quasicrystal.
© EDP Sciences, 2011
