Noun
Gaussian beam (plural Gaussian beams)
(optics) A beam of electromagnetic radiation with high monochromaticity whose amplitude envelope in the transverse plane is given by a Gaussian function.
I have spent some time looking at how to design a field mapping system that turns a Gaussian beam profile into a top-hat beam. Source: Internet
When the entire emitted beam has a planar, spatially coherent wave front, it approximates Gaussian beam profile and has the lowest divergence for a given diameter. Source: Internet
Divergence of a laser beam may be reduced below the diffraction of a Gaussian beam or even reversed to convergence if the refractive index of the propagation media increases with the light intensity. citation This may result in a self-focusing effect. Source: Internet
The percentage of 86, rather than 50, 80, or 90, is chosen because a circular Gaussian beam profile integrated down to 1/e 2 of its peak value contains 86% of its total power. Source: Internet