Huygens's principle and rays in uniaxial anisotropic media. II. Crystal axis orientation arbitrary

We continue and extend Paper I [M. Avendaño-Alejo et al., J. Opt. Soc. Am. A 19, 1669-1674 (2002)] to the more general case where the crystal axis is not parallel to the surface normal. The procedures and the derivations follow those of Paper I. The result enables one to trace extraordinary rays in and out of a prism as well as through a crystal whose refracting surfaces are not planar.