Wavelength converter (IMAGE) Yokohama National University Caption Wavelength converter for our two-photon comb Credit Tomoyuki Horikiri, Yokohama National University Usage Restrictions News organizations may use or redistribute this image, with proper attribution, as part of news coverage of this paper only. 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.