Introduction to wave plates “Wave plate is an instrument (Optical device) that has the ability to change the state of light when light is incident on it.” These plates are made from different materials most common of which are birefringent material (plastic) Wave plates either half or quarter plates have

Crystals are categorized as both isotropic and anisotropic depending upon their optical behavior and whether or not their crystallographic axes are equivalent. All isotropic crystals have identical axes that similarly engage with light, irrespective of the crystal orientation with admire to incident light waves. Light getting into an isotropic crystal is refracted at a regular attitude and passes through the crystal at a fixed angle, having constant speed without being polarized with the aid of interaction with the electronic components of the crystalline lattice. On the other