Abstract

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, ${\mathrm{TEM}}_{11}$ 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

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