Method and device for machining of a workpiece

摘要

Method involves applying of a liquid photo sensitizer (5) on the workpiece (2) and penetration of liquid photo sensitizer into workpiece during irradiation. The photo sensitizer has an absorption maximum or close to the half wavelength of laser radiation (12) and hardening of the workpiece is caused by irradiation. Independent claims are also included for the following: (1) Estimation of the situation of one or more foci for a method; (2) Device for processing a workpiece; and (3) Use of a short-pulse or an ultra short-pulse laser for the production of a device for the treatment of keratoconus.