![]() ![]() The commonly used definition of beam width is the width at which the beam intensity is 1 /e 2 (13.5%) of its peak value. Laser beam profile perpendicular to its propagation direction is not defined, and in theory extends to infinity. ISO standard 11146 defines approaches to be used in measuring such beams. Although existing theory accurately predicts laser propagation in a real world involving engineering specification, it is crucial for researchers, system designers, and laser manufacturers to be able to accurately measure these parameters. ![]() This is continuously changing as a function of its laser cavity, divergence, interaction with optical elements and electronics driver characteristics. A laser propagating through space has a different width and spatial intensity distribution along its propagation path. Beam profile intensity distribution is an important parameter that indicates how a laser beam will behave in an application and will dictate the overall system performance in a specific setup. ![]()
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