Spatial Kramers–Kronig relations and the reflection of waves
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Spatial Kramers–Kronig relations and the reflection of waves
When a planar dielectric medium has a permittivity profile that is an analytic function in the upper or lower half of the complex position plane x = x′+ ix′′ then the real and imaginary parts of its permittivity are related by the spatial Kramers-Kronig relations. We find that such a medium won’t reflect radiation incident from one side, whatever the angle of incidence. Using the spatial Kramer...
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ژورنال
عنوان ژورنال: Nature Photonics
سال: 2015
ISSN: 1749-4885,1749-4893
DOI: 10.1038/nphoton.2015.106