Lawrence Livermore National Security, LLC

Manyilibo J Matthews

Jay Walter Dawson

Alexander M Rubenchik

Paul H Pax

Derrek Reginald Drachenberg

Gabriel Mark Guss

A high-power laser beam with an arbitrary intensity profile is produced. Such beam has a variety of uses including for laser materials processing such as powder bed fusion additive manufacturing. Several challenges in additive manufacturing are mitigated with the present non-uniform intensity laser profiles. Nonuniform shapes include a set of intensity pixels in a line that could print a wide stripe area instead of just a single line. One example uses the multimode interference pattern from the output of a ribbon fiber which is imaged onto a work piece. The interference pattern is controlled to allow turning on or off of 'pixels' along a line which can be used to shape the beam and form the additively manufactured part.

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Livermore, CA, United States of America

Manyilibo J Matthews