Abstract
Vector formulations of laws of reflection and refraction of plane electromagnetic waves from the plane metasurface that separates two isotropic media and is characterized by phase gradients are obtained and analyzed. The media support the forward or backward normal waves that differ by identifiers. Critical angles of total internal reflection are presented, and conditions of occurrence of negative refraction and negative reflection are specified. Retroreflection and special cases of wave refraction are considered, and restrictions on the metasurface parameters are given.
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