Previous analytical results for Bragg scattering of a Gaussian beam by a periodic medium are extended to angles close to a Bragg angle. The effects of deviations from the exact Bragg condition are illustrated by numerical examples.
© 1976 Optical Society of America
Ruey-Shi Chu and Theodor Tamir, "Diffraction of Gaussian beams by periodically modulated media for incidence close to a Bragg angle," J. Opt. Soc. Am. 66, 1438-1440 (1976)