Complex Refraction Metasurfaces for Locally Enhanced Propagation Through Opaque Media
Sinuhé Perea‐Puente,
Francisco J. Rodríguez‐Fortuño
Abstract:Metasurfaces with linear phase gradients can redirect light beams. Controlling both phase and amplitude of a metasurface is proposed to extend Snell's law to the realm of complex angles, enabling a non‐decaying transmission through opaque media with complex refractive indices. This leads to the discovery of non‐diffracting and non‐decaying solutions to the wave equation in opaque media, in the form of generalized cosine and Bessel‐beams with a complex argument. While these solutions present nonphysical exponen… Show more
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