In this work, we analyze the far-field pattern produced by a grating made of strips with two different random roughness levels. The efficiency and shape of the diffraction orders is obtained, which are shown to depend on the statistical properties of roughness. We assume for the calculations that the grating can be used in a mobile mechanical system. A preliminary experimental approach which partially corroborates the theoretical results is also performed.
© 2008 Optical Society of America
Diffraction and Gratings
Original Manuscript: October 4, 2007
Revised Manuscript: January 24, 2008
Manuscript Accepted: January 26, 2008
Published: March 4, 2008
Luis Miguel Sanchez-Brea, Francisco Jose Torcal-Milla, and Eusebio Bernabeu, "Far field of gratings with rough strips," J. Opt. Soc. Am. A 25, 828-833 (2008)