Vortex-like surface wave and its role in the transient phenomena of meta-material focusing

Details Vortex-like surface wave and its role in the transient phenomena of meta-material focusing Vortex-like surface wave and its role in the transient phenomena of meta-material focusing

2004-07-14

arxiv.org/abs/physics/0407070v2

Physics

Optics

To appear in the March 7th issue of Appl. Phys. Lett

Scientific paper

10.1063/1.1879104

We show that a slab of meta-material (with $\epsilon=\mu=-1+i\Delta$) possesses a vortex-like surface wave with no ability to transport energy, whose nature is completely different from a localized mode or a standing wave. Through computations based on a rigorous time-dependent Green's function approach, we demonstrate that such a mode inevitably generates characteristic image oscillations in two dimensional focusing with even a monochromatic source, which were observed in many numerical simulations, but such oscillations are weak in three dimensional focusing.

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