Electromagnetic properties of one-dimensional photonic crystals with single negative materials |
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Authors: | Li-wei Zhang |
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Affiliation: | ZHANG Li-wei1**,QIAO Wen-tao1,ZHAO Yu-huan1,, DU Gui-qiang2 1.School of Physics , Chemistry,Henan Polytechnic University,Jiaozuo 454000,China 2.School of Space Science , Physics,Sh,ong University at Weihai,Weihai 264209,China |
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Abstract: | The electromagnetic properties of one-dimensional photonic crystals with two kinds of single negative (SNG) materials are
investigated by the transfer matrix method. The results show that the photonic crystals have zero-effective phase (zero-Φ
eff) gap and angular gap, which are both non-Bragg gap. The zero-Φ
eff gap is invariant with the incident angle and lattice scaling for different polarizations. The gap can be adjusted by varying
the ratio between the two single negative materials’ thickness. The angular gap is highly dependent on the incident angle
and polarization, but it is insensitive to the ratio between the two single negative materials’ thickness and lattice scale
length. It is also found that the electric field gets extremely enhanced at the lower edge of the angular gap for transverse
magnetic (TM) wave. The characteristics will have potential applications in nonlinear optical apparatus. |
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Keywords: | |
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