|Title||Reconciliation of generalized refraction with diffraction theory|
|Publication Type||Journal Article|
|Year of Publication||2012|
|Authors||S. Larouche, D.R. Smith|
|Keywords||Diffraction gratings, Diffraction theory|
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.