Product Code: ICA12_707

Controllable Beam Intensity Profile for the Tasks of Laser Material Processing
Authors:
Alexander Laskin, AdlOptica GmbH; Berlin Germany
Vadim Laskin, AdlOptica GmbH; Berlin Germany
Presented at ICALEO 2012

Modern techniques of laser material processing require not only simple homogenizing of a beam, but also more freedom in manipulation of intensity profile and generating such profiles like super-Gaussian and inverse-Gaussian; controllable varying of the intensity profile allows to adjust" a particular material processing technology, improve it or make more efficient. These tasks can be successfully accomplished using the field mapping refractive beam shaping optics like piShaper, which operational principle presumes saving of beam consistency, collimated low divergent output beam, high transmittance and extended depth of field. Varying of the input beam diameter makes it possible to realize either super-Gaussian (smaller input) or inverse-Gaussian (bigger input) intensity profiles of output beam. All variety of profiles can be provided by the same beam shaper unit. The paper considers the design basics of refractive beam shapers and techniques to vary the output intensity profile. Experimental results will be presented as well.