Abstract

Using the anomalous diffraction approximation, we obtain absorption and extinction cross sections of several differently shaped prismatic columns and plates in a simple analytical form. Specifically, we consider columns with triangular, trapezoidal, parallelogram, and hexagonal bases. We estimate the anomalous diffraction approximation results to be within 25% accuracy for refractive indices with real parts up to 1.40 and within 10% accuracy for real parts up to 1.20.

© 1991 Optical Society of America

Extinction cross sections of nonspherical particles in the anomalous diffraction approximation

Petr Chýlek and James D. Klett
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