Abstract

The theoretical foundation of the Kirchhoff approximation for light scattering by optically isotropic and homogeneous crystals was presented by Muinonen.¹ In that approximation, the reflected and transmitted electromagnetic near fields were calculated from geometric optics ray-tracing. The corresponding far fields were then obtained from the vector Kirchhoff integral relation. The earlier computer simulations for randomly oriented crystals were, however, based on a modified Kirchhoff approximation that included further simplifications.

© 1991 Optical Society of America