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arXiv · 1705.00500

Perfect Broadband Invisibility in Isotropic Media with Gain and Loss

Farhang Loran·Ali Mostafazadeh
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Abstract

We outline a method for constructing effectively two-dimensional isotropic optical media that are perfectly and omnidirectionally invisible for both TE and TM waves provided that their wavenumber does not exceed a preassigned value $α$. This relies on the observation that a complex scattering potential $v(x,y)$ displays perfect invisibility for wavenumbers $k\leqα$ provided that its Fourier transform with respect to $y$, which we denote by $\tilde v(x,\mathfrak{K}_y)$, vanishes for $\mathfrak{K}_y\leq 2α$. We use this result to construct the permittivity profile for a realistic optical slab that is perfectly invisible in the wavenumber window $[0,α]$.

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Farhang Loran, Ali Mostafazadeh. 2017-05-01. Perfect Broadband Invisibility in Isotropic Media with Gain and Loss. https://doi.org/10.1364/ol.42.005250

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