title: Reconciliation of generalized refraction with diffraction theory.
abstract: 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.
authors: Center for Metamaterials and Integrated Plasmonics, Department of Electrical and Computer Engineering, Pratt School of Engineering, Duke University, Box 90291, Durham, North Carolina 27708, USA. stephane.larouche@duke.edu
authors: Stéphane
authors: S
authors: Larouche
authors: David R
authors: DR
authors: Smith