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Tophat beam

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.
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