Source: wikibot/beam-parameter-product
= Beam parameter product
{wiki=Beam_parameter_product}
The beam parameter product is a concept used in optics and laser physics to describe the quality of a laser beam. It quantifies how well a beam can focus and propagate through space. The beam parameter product (often represented as \\(M^2\\)) is defined as the product of the beam radius (width) and the divergence of the beam.