title: Nonreciprocal diffraction by spatial modulation of absorption and refraction.
abstract: Linear diffraction gratings that provide strongly asymmetric diffraction without surface modulation are created and studied. The spatial phase shift of the refractive-index grating relative to the absorption grating is the origin of nonreciprocal behavior.
authors: R
authors: R
authors: Birabassov
authors: A
authors: A
authors: Yesayan
authors: T V
authors: TV
authors: Galstyan