Electro–optics is a branch of electrical engineering, electronic engineering, materials science, and material physics involving components, electronic devices such as , , LEDs, , etc. which operate by the propagation and interaction of light with various tailored materials. It is closely related to photonics, the branch of optics that involves the application of the generation of . It is not only concerned with the "electro–optic effect", since it deals with the interaction between the electromagnetism () and the () states of materials.
Electro-optical devices
The electro-optic effect is a change in the optical properties of an optically active material in response to changes in an electric field. This interaction usually results in a change in the
birefringence, and not simply the refractive index of the medium. In a
Kerr cell, the change in birefringence is proportional to the square of the electric field, and the material is usually a liquid. In a
Pockels cell, the change in birefringence varies linearly with the electric field, and the material is usually a crystal. Non-crystalline, solid electro-optical materials have generated interest because of their low cost of production. These organic, polymer-based materials are also known as organic EO material, plastic EO material, or polymer EO material. They consist of nonlinear optical
chromophores in a polymer lattice. The nonlinear optical chromophores can produce
Pockels effect.
See also
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Photoferroelectric imaging
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