Abstract

The diffraction of Gaussian beams by multiple-grating configurations is analyzed using a general operator representation. Analytical intensity expressions were obtained for the 0 and ± 1 orders of diffraction for two gratings separated by a distance L. These results exhibit features that were not evident from simpler plane wave analyses of comparable configurations. In particular, the fundamental dynamic amplitudes due to the relative motion of the gratings vary as the Gaussian beam parameters change.

© 1987 Optical Society of America