1 Ocak 2021 Dergi makalesi Açık Erişim

Gundogdu, T. F.; Gokkavas, M.; Serebryannikov, A. E.; Ozbay, E.

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    <subfield code="a">Evidence of asymmetric beaming in a piecewise-linear propagation channel</subfield>
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    <subfield code="a">Asymmetric beaming in a piecewise-linear propagation channel is demonstrated for a single photonic-crystal prism atGaussian-beam illumination. The used hybrid refraction-diffraction mechanism exploits oblique incidence, the first-negative-order deflection at the longer interface, and asymmetry in coupling at the exit interfaces and does not need blocking of transmission by dispersion in the backward illumination case. The Floquet-Bloch mode with left-handed behavior and nearly circular equifrequency dispersion contours is utilized. The outgoing waves may have significantly different spatial distributions for the forward and backward illumination cases, yielding asymmetry in the beaming regime. (C) 2021 Optical Society of America</subfield>
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