Mode-Locked Laser (IMAGE) American Institute of Physics Caption One type of laser that's particularly suited for quantum dots is a mode-locked laser, which passively generates ultrashort pulses less than one picosecond in duration. Credit Peter Allen Usage Restrictions This image may be used only with appropriate credit. 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.