Crystalline polarizers are made of crystals. In anisotropic crystalline materials, whose optical properties are different in different directions, incident beam is split into two orthogonally polarized components propagating in a crystal with different
velocities. These components are called ordinary and extraordinary rays, and they characterize different indexes of refraction: no – for ordinary ray ne – for extraordinary ray. If some means can be founded to separate one ray from the other, a doubly refracting crystal may be used as a polarizer.
We produce crystalline polarizers made of calcite, quartz, lithium niobate and magnesium fluoride.
There are a few of crystalline polarizers that are produced in Solaris: Glan-Thompson, Glan-Taylor, Wollaston, Rochon.