Abstract

An integral-equation-based theoretical and numerical study is made of the geometric structure of the electric fields induced by electromagnetic waves incident upon homogeneous symmetric particles that are small compared with the wavelength of the ambient field. Emphasis is on the particle-shape-dependent characteristic resonant modes associated with absorption bands of the bulk material. The potentials and electric fields inside and near hemispherically capped cylinders are presented to illustrate the general theory. Implications of the results for linear and nonlinear scattering and for radiation transfer are discussed.

© 1985 Optical Society of America

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