کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1866437 | 1530643 | 2007 | 4 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Zero permeability and zero permittivity band gaps in 1D metamaterial photonic crystals Zero permeability and zero permittivity band gaps in 1D metamaterial photonic crystals](/preview/png/1866437.png)
We consider layered heterostructures combining ordinary positive index materials and dispersive metamaterials. We show that these structures can exhibit a new type of photonic gap around frequencies where either the magnetic permeability μ or the electric permittivity ϵ of the metamaterial is zero. Although the interface of a semi-infinite medium with zero refractive index (a condition attained either when μ=0μ=0 or when ϵ=0ϵ=0) is known to give full reflectivity for all incident polarizations, here we show that a gap corresponding to μ=0μ=0 occurs only for TE polarized waves, whereas a gap corresponding to ϵ=0ϵ=0 occurs only for TM polarized waves. These band gaps are scale-length invariant and very robust against disorder, although they may disappear for the particular case of propagation along the stratification direction.
Journal: Physics Letters A - Volume 364, Issues 3–4, 30 April 2007, Pages 352–355