An imaging technique with solid-state lasers that has several limitations: non-uniform energy distribution, very short working distances, and poor control of hole geometry.
Flashlamp
Flexography
A printing process involving laser-engraved, seamless rubber plates.
Fluorescence
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.
Flux
The radiant, or luminous, power of a light beam; the time rate of the flow of radiant energy across a given surface.