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Coherent perfect absorption mediated anomalous reflection and refraction

Shourya Dutta-Gupta, Rahul Deshmukh, Achanta Venu Gopal, Olivier J. F. Martin, and S. Dutta Gupta

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Abstract

We show bending of light on the same side of the normal in a free-standing corrugated metal film under bidirectional illumination. Coherent perfect absorption (CPA) is exploited to suppress the specular zeroth order leading to effective back-bending of light into the “−1” order, while the “+1” order is resonant with the surface mode. The effect is shown to be phase sensitive, yielding CPA and superscattering in the same geometry.

© 2012 Optical Society of America

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