Time-Stretch Infrared Spectroscopy (IMAGE) University of Tokyo Caption Laser pulses lasting for mere femtoseconds (one-quadrillionth of a second) are stretched to the nanosecond (one-billionth of a second) range. Credit © 2020 Ideguchi et al. Usage Restrictions © 2020 Ideguchi et al. 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.