Flat lenses constructed by graded negative index-based photonic crystals with tuned configurations

doi:10.1088/1674-1056/22/10/104101

Abstract Flat lenses are designed by means of graded negative refractive index-based photonic crystals (PCs) constructed using air-holes tuned with different shapes. By gradually modifying the filling factor along the transverse direction, we obtain the graded negative index-based lenses for the purpose of focusing an incident plane wave. The finite-difference and time-domain (FDTD) algorithm is adopted for numerical calculation. Our calculation results indicate that these lenses can finely focus incident plane waves. Moreover, for the same size of air-holes, the focusing properties of the lens with rectangular air-holes are better than those with the other shaped air-holes. The graded negative index PCs lenses could possibly enable new applications in optoelectronic systems.

Keywords: photonic crystals graded negative index focusing flat lenses

Received: 20 November 2012
Revised: 06 March 2013
Accepted manuscript online:

PACS:	41.20.Jb	(Electromagnetic wave propagation; radiowave propagation)
	42.25.Bs	(Wave propagation, transmission and absorption)
	42.70.Qs	(Photonic bandgap materials)

Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 11079014, 61077010, 90923036, and 60977041) and the 100-Talent Program of the Chinese Academy of Sciences.

Corresponding Authors: Fu Yong-Qi, Yu Wei-Xing
E-mail: yqfu@uestc.edu.cn;yuwx@ciomp.ac.cn

Cite this article:

Jin Lei (晋蕾), Zhu Qing-Yi (朱清溢), Fu Yong-Qi (付永启), Yu Wei-Xing (鱼卫星) Flat lenses constructed by graded negative index-based photonic crystals with tuned configurations 2013 Chin. Phys. B 22 104101

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Flat lenses constructed by graded negative index-based photonic crystals with tuned configurations

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