Optical Microresonator of Silicon Nitride (IMAGE) Karlsruher Institut für Technologie (KIT) Caption A single laser light is used to produce a multitude of spectral lines, hence forming a frequency comb. Credit Photo: KIT/ J. Pfeifle 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.