Optical Setup (IMAGE) Optica Caption Researchers used a technology borrowed from quantum optics to perform optical coherence tomography (OCT) with much lower light powers than previously possible. Two views of their optical setup are shown. Credit Andrzej Roma?ski 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.