Electromagnetic Scattering by Obliquely Oriented Cylinders

Numerical results for scattering coefficients and extinction efficiencies for obliquely oriented infinite circular cylinders with index of refraction m=1.6 are presented. The extinction efficiencies for oblique incidence have a much more intense resonance structure than those for normal incidence. An analysis is made of these resonance modes for large angles of incidence and comparison is made with the propagation modes in cylindrical dielectric waveguides. A polarization reversal via extinction is noted for thin cylinders with sufficient tilt angles. By comparison with preliminary experimental results on finite cylinders it is shown that the theoretical solution for infinite cylinders may be usefully applied to the finite case as long as the angle of incidence of the radiation is small.

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