Description

In the last few years, significant developments in experimental methods for optical control of laser beams have taken place. One such technique, based on liquid crystal spatial light modulators (SLMs), has found applications for example to make detectors for high energy physics [1, 2], pattern battery electrodes for electric vehicles or tailored heat treatments to control parts metallurgy. For example, one method uses spatially structured light, shaped into a radial geometry which, when focused with a high Numerical Aperture (NA) microscope objective, induces highly localised longitudinal electric fields [3]. In other applications, laser intensity distribution can be tailored dynamically to each specific condition during the process. More recently, SLM based technique evolved towards multi-hundred-watt applications, opening new avenues such as tailored heat treatment and localised metallurgy control. In this research, example applications using laser beam manipulation with an SLM are demonstrated from low to high power. Case studies are shown, exploring the processing of materials under various experimental conditions. Application examples illustrate processing radiation hard materials for high energy dosimeters using dynamic control of laser optical parameters. Furthermore, a new methodology for high power beam manipulation with an SLM is presented.

Contributing Authors

  • Yu Wang
    The University of Manchester
  • S. Wang
    University of Liverpool
  • Shuchen Zuo
    The University of Manchester
  • Y. Tang
    University of Liverpool
  • Huazhen Li
    The University of Manchester
  • Dan Wilson
    The University of Manchester
  • David Whitehead
    The University of Manchester
  • Walter Perrie
    University of Liverpool
  • Nazanin Mirhosseini
    The University of Manchester
  • Wajira Mirihanage
    The University of Manchester
  • Paul Mativenga
    The University of Manchester
Track: Laser Beam-Shaping and Macro-Processing Track
Session: Beamshaping in Micro Processing
Day of Week: Wednesday
Date/Time:
Location: Boca 1-2

Keywords

  • Beam Manipulation
  • Beam Shaping
  • Real Time Control
  • Spatial Light Modulator