Ordinary and Extraordinary Refractive Indices in a 2D Anisotropic Crystal

refractive index along x axis

n

e

(90)

9

refractive index along optic axis

n

0

2.76

angle of line θ (radians)

2.1

e-ray refractive index for the angle θ =

4.84177

This Demonstration shows how the refractive index of an e-ray and an o-ray change with the angle

θ

with respect to the optic axis in a 2D anisotropic crystal. It shows the shapes of the refractive indices of both negative and positive crystals and the plots show how the values of the refractive indices change in different directions inside a crystal.