is a branch of technology
involving components, devices and systems which operate by modification of the optical properties of a material by an electric field
. Thus it concerns the interaction between the electromagnetic
) and the electrical
) states of materials.
The electro-optic effect
relates to a change in the optical properties of the medium which usually is a change in the birefringence
and not simply the refractive index.
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 a crystal.
" is often erroneously used as a synonym for "optoelectronic
Source: from Federal Standard 1037C
and from MIL-STD-188
and from the Department of Defense Dictionary of Military and Associated Terms