Definitions for "Extinction Ratio"
The ratio of the intensity of a plane-polarized beam that is transmitted through a polarizer whose polarizing axis is parallel to the beam’s plane, versus the intensity when the polarizer’s axis is perpendicular to the beam’s plane.
A common measure of the polarizing characteristics of a polarizer.
in a polarizer, the ratio of the optical power in the desired transmitted polarization to that in the blocked polarization