Metamaterial slab as a lens, a cloak or something in between

Details Metamaterial slab as a lens, a cloak or something in between Metamaterial slab as a lens, a cloak or something in between

2010-10-30

arxiv.org/abs/1011.0044v1

Phys. Rev. B 83, 115124 (2011)

Physics

Optics

28 pages, 4 figures, including a paper and its auxiliary material

Scientific paper

We show that a metamaterial slab with arbitrary values of epsilon and mu behaves as a cloak at a finite frequency for a small object located sufficiently close to it due to the suppression of the object's optical excitations by enhanced reflections. Reflections due to propagating components can partially suppress the excitation while evanescent components can cloak the object completely. In particular, a Veselago slab with epsilon = mu = -1 + i delta, as well as a class of anisotropic negative refractive index slabs, can completely cloak the small object placed within a finite distance from the slab when delta -> 0.

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