Journal
OPTICS LETTERS
Volume 37, Issue 12, Pages 2391-2393Publisher
OPTICAL SOC AMER
DOI: 10.1364/OL.37.002391
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- Multidisciplinary University Research Initiative [W911NF-09-1-0539]
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When an electromagnetic wave is obliquely incident on the interface between two homogeneous media with different refractive indices, the requirement of phase continuity across the interface generally leads to a shift in the trajectory of the wave. When a linearly position-dependent phase shift is imposed at the interface, the resulting refraction may be described using a generalized version of Snell's law. In this Letter, we establish a formal equivalence between generalized refraction and blazed diffraction gratings, further discussing the relative merits of the two approaches. (C) 2012 Optical Society of America
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