Automatic laser marking of silicon wafers in batch format. The laser marking can be produced in either hard or soft mark configurations. Dot matrix fonts are traditionally used to minimise the amount of disruption to the surface. With soft mark no material is removed during the laser marking process, therefore reducing contamination across the wafer area.
The process used diode pumped lasers, which have now been replaced by fibre lasers due to the control ability pulse to pulse. Laser marking of silicon is done in such a way as to ensure there is no negative impact on the remainder of the manufacturing process. Further, the markings must be machine readable, so precision is of increased importance.
If you would like further information on this laser marking application, or any other application, please request a call back, or talk to one of our laser marking specialists on 01737 826902.