The flux of energy given by the Poynting vector S<sub>e</sub> and the k<sub>t</sub>-wave vector normal to the geometrical wavefront for the extraordinary ray propagating through uniaxial crystals can be evaluated by using the theory developed by Avendaño-Alejo [J. Opt. Soc. Am. A 19, 1668 (2002)] and Avendaño-Alejo and Stavroudis [J. Opt. Soc. Am. A19, 1674 (2002)]. We give here the equations necessary to evaluate the general dispersion angle S<sub>e</sub>·k<sub>t</sub>. Additionally we define two new dispersion angles, S<sub>e</sub>·A and k<sub>t</sub>·A, where A is the crystal axis vector. With these new dispersion angles we evaluate the optical path length traversed by the extraordinary ray in a plane-parallel uniaxial plate when the crystal axis lies in the plane of incidence.
© 2006 Optical Society of America
Original Manuscript: June 10, 2005
Revised Manuscript: September 6, 2005
Manuscript Accepted: September 16, 2005
Maximino Avendaño-Alejo and Martha Rosete-Aguilar, "Optical path difference in a plane-parallel uniaxial plate," J. Opt. Soc. Am. A 23, 926-932 (2006)