Source of powerful light; often in the form of a helical coil and used to excite photon emission in a solid-state laser.

A printing process involving laser-engraved, seamless rubber plates.

The glow induced in a material when bombarded by light. Brewster windows of fused silica fluoresce in UV light, increasing absorption of laser radiation and degrading laser mode and output.

The radiant, or luminous, power of a light beam; the time rate of the flow of radiant energy across a given surface.