Novel NIST Laser System Mimics Sunlight to Test Solar Cell Efficiency (image) National Institute of Standards and Technology (NIST) Share Print E-Mail Caption NIST engineer Tasshi Dennis is shown with NIST's solar simulator based on a white light laser. The instrument simulates sunlight to help measure the properties of solar cell materials. The instrument's beam is illuminating a gallium arsenide solar cell (yellow diamond) in the lower left corner of the photo. Credit Burrus/NIST Usage Restrictions None Share Print E-Mail 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.