Nanolaser-Optical Setup (IMAGE) University of California - Berkeley Caption Both pictures show a bright emerald green point of light from a single plasmon laser emanating from the optical setup used by UC Berkeley researchers. These semiconductor lasers -- the world's smallest -- are extremely efficient, so the small amount of scattered light is clearly visible, even in ambient room lighting. Camera saturation of the bright laser light gives the impression of a larger spot. Credit Courtesy of Xiang Zhang Lab, UC Berkeley Usage Restrictions Must include credit (Xiang Zhang Lab at UC Berkeley) 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.