System and methods for forming apertures in microfeature workpieces
Systems and methods for forming apertures in microfeature workpieces are disclosed herein. In one embodiment, a method includes directing a laser beam toward a microfeature workpiece to form an aperture and sensing the laser beam pass through the microfeature workpiece in real time. The method can further include determining a number of pulses of the laser beam and/or an elapsed time to form the aperture and controlling the laser beam based on the determined number of pulses and/or the determined elapsed time to form a second aperture in the microfeature workpiece.
1. A method for forming a plurality of apertures in a microfeature workpiece, the method comprising:
impinging a laser beam upon the microfeature workpiece to form a first aperture;
sensing the laser beam pass through the microfeature workpiece with a sensor; and
forming a second aperture by controlling the laser beam based on a determined number of pulses of the laser beam to form the first aperture and/or a determined elapsed time to form the first aperture.
2. The method of claim 1 wherein forming the second aperture comprises automatically determining the number of pulses of the laser beam and/or the elapsed time to form the first aperture.
3. The method of claim 1 wherein forming the second aperture comprises:
selecting an adjusted number of pulses by changing the determined number of pulses according to a correction factor; and
directing the laser beam toward the microfeature workpiece for the adjusted number of pulses to form the second aperture.
4. The method of claim 1 wherein forming the second aperture comprises:
selecting an adjusted time by changing the determined elapsed time according to a correction factor; and
directing the laser beam toward the microfeature workpiece for the adjusted time to form the second aperture.
5. The method of claim 1 wherein:
the second aperture comprises a blind hole; and
forming the second aperture comprises controlling the laser beam based on a selected depth of the blind hole.
6. The method of claim 1 wherein:
the microfeature workpiece includes a first surface and a second surface opposite the first surface; and
the method further comprises supporting the microfeature workpiece with a workpiece carrier so that a center region of the first surface and a center region of the second surface do not contact the workpiece carrier while directing the laser beam.