crystalline polarizers

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.