Coherent, Inc.
LASER APPARATUS FOR CUTTING BRITTLE MATERIAL

Last updated:

Abstract:

An apparatus for cutting brittle material comprises an aspheric focusing lens, an aperture, and a laser-source generating a beam of pulsed laser-radiation. The aspheric lens and the aperture form the beam of pulsed laser-radiation into an elongated focus having a uniform intensity distribution along the optical axis of the aspheric focusing lens. The elongated focus extends through the full thickness of a workpiece made of a brittle material. The workpiece is cut by tracing the optical axis along a cutting line. Each pulse or burst of pulsed laser-radiation creates an extended defect through the full thickness of the workpiece.

Status:
Application
Type:

Utility

Filling date:

28 Apr 2020

Issue date:

13 Aug 2020