29 August 2008 Effect of interface on the far-field focusing in a two-dimensional honeycomb photonic crystal
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Abstract
The far-field focusing properties of two dimensional photonic crystals based flat lens with rod-type honeycomb lattice are investigated using finite difference time domain (FDTD) method. The results match the wave-beam negative refraction law with relative refractive index of -1. But, the image qualities are limited by low transmission at large incident angles. To improve the image qualities, the effects of interface on the far-field image in a two-dimensional honeycomb photonic crystal are investigated. It is found that the image qualities can be improved by modifying the radius of rod near the surface of photonic crystals slab.
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Ping-Li Yong, Ping-Li Yong, Jun-Li Guo, Jun-Li Guo, Liang-Kang Xue, Liang-Kang Xue, } "Effect of interface on the far-field focusing in a two-dimensional honeycomb photonic crystal", Proc. SPIE 7031, Active Photonic Crystals II, 70310L (29 August 2008); doi: 10.1117/12.800905; https://doi.org/10.1117/12.800905
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