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In optics, a Tophat beam is a Laser beam with a near-uniform fluence (energy density) within a circular disk. It is typically formed by diffractive optical elements from a Gaussian beam. Tophat beams are often used in the industry, e.g. for laser drilling of holes in Printed Circuit Boards.
|This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Tophat_beam". A list of authors is available in Wikipedia.|