Abstract
In order to increase the quality of laser surface treatments of materials, the authors propose an optical device that permits the recombination of a gaussian laser beam in a square spot of variable dimensions with an homogeneous energy repartition. They calculate, neglecting interference phenomenon, the repartition of energy issued from this optical device. Taking into an account optical phenomena due to the principle of a such device (as diffraction and interference), they show precisely the theoretical studies of the energy repartition issued from a similar device leading to a rectangular spot. These studies are compared with experimental results and for different observation planes. Practical utilizations of this device during thermal treatments of metallic materials are shown.
Published Version
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