Light Propagation in Anisotropic Crystals

This chapter introduces the *principal axes* and *principal refractive indices* of a crystal, and addresses these questions: For light propagating in an anisotropic crystal, if the direction of the **k** vector is known with respect to the principal axes,

1. What are the directions along which the electric field vector **E** and the displacement vector **D** oscillate?

2. What is the angle between the **k** vector and the Poynting vector **S**?

3. What is the propagation equation describing the spatial change of the electric field amplitude for the propagation of an electromagnetic wave through an anisotropic medium?

Propagation in a biaxial crystal in an arbitrary direction will be considered first. Then, special directions ...

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