We present a model to determine the light scattered by a metallic cylinder with longitudinal structures when the cylinder is illuminated by a Gaussian light beam in oblique incidence. The model is based on an approximate solution to the Helmholtz–Kirchhoff integral by means of the stationary-phase method. We have studied the variations of the diffraction pattern in terms of the size of the defect and other geometrical parameters. The width of the beam and the misalignment between the beam and the cylinder have also been considered, as well as the optical properties of the surface.
© 2004 Optical Society of America
Original Manuscript: August 4, 2003
Revised Manuscript: January 6, 2004
Manuscript Accepted: January 6, 2004
Published: June 1, 2004
Luis Miguel Sanchez-Brea, "Diffraction of cylinders with longitudinal surface structures," J. Opt. Soc. Am. A 21, 1102-1108 (2004)