Random Laser Mask (IMAGE) Vienna University of Technology Caption Here, the beam of light is first sent through a mask, so that different regions of the laser are pumped with different amounts of energy. This selective pumping leads to the laser emitting a beam of light exactly into the right direction. Credit Vienna University of Technology Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.