Femtosecond Laser Pulse (IMAGE) DOE/Los Alamos National Laboratory Caption A femtosecond laser pulse launches a photocurrent transient in a quantum dot solid, which is time-resolved using ultrafast sampling electronics. This technique provides unprecedented insights into early time photoconductance in quantum dot assemblies for solar cells and photodetectors. Credit Los Alamos National Laboratory 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.