Non-Magnetic Cloak without Reflection

Details Non-Magnetic Cloak without Reflection Non-Magnetic Cloak without Reflection

2007-07-24

arxiv.org/abs/0707.3641v1

Physics

Optics

8 pages, 3 figures

Scientific paper

In an electromagnetic cloak based on a transformation approach, reduced sets of material properties are generally favored due to their easier implementation in reality, although a seemingly inevitable drawback of undesired reflection exists in such cloaks. Here we suggest using high-order transformations to create smooth moduli at the outer boundary of the cloak, therefore completely eliminating the detrimental scattering within the limit of geometric optics. We apply this scheme to a non-magnetic cylindrical cloak and demonstrate that the scattered field is reduced substantially in a cloak with optimal quadratic transformation as compared to its linear counterpart.

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