In optics, a tophat beam (also Flat-top or top-hat beam) such as a laser beam or electron beam has a near-uniform fluence (energy density) within a circular disk. It is typically formed by refractive or diffractive optical elements from a Gaussian beam.
In optics, a tophat beam (also Flat-top or top-hat beam) such as a laser beam or electron beam has a near-uniform fluence (energy density) within a circular disk. It is typically formed by refractive or diffractive optical elements from a Gaussian beam.
Source: Wikipedia "Tophat beam" · CC BY-SA 4.0
Share this article: X · Bluesky