A cylindrical coordinate separation-of-variables solution is developed for the determination of the internal and the near-surface electromagnetic fields for the arrangement of a focused beam incident upon a homogeneous infinite circular cylinder. The angle of incidence and the focal point location of the beam, as well as the beam type (e.g., fundamental Gaussian beam, doughnut mode beam, TEM<sub>11</sub> mode beam), can be arbitrarily specified. As a demonstration of the procedure, gray-level and contour plots of calculated electric-field distributions for a fundamental Gaussian beam focused on a cylinder are presented for six different angle-of-incidence and relative index-of-refraction combinations.
© 1999 Optical Society of America
J. P. Barton, "Internal and near-surface electromagnetic fields for an infinite cylinder illuminated by an arbitrary focused beam," J. Opt. Soc. Am. A 16, 160-166 (1999)