Multiple-beam laser processing using multiple laser beams with distinct wavelengths and/or pulse durations

M Mendes, JP Sercel, R Sarrafi, X Song… - US Patent …, 2018 - Google Patents
Multiple-beam laser processing may be performed on a workpiece using at least first and
second laser beams with different characteristics (eg, wavelengths and/or pulse durations).
In some applications, an assist laser beam is directed at a target location on or within the
workpiece to modify a property of the non-absorptive material. A process laser beam is
directed at the target location and is coupled into absorption centers formed in the non-
absorptive material to complete processing of the non-absorptive material. Multiple-beam …
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