Arbitrarily Short and Focused Electromagnetic Fields (image) University of Innsbruck Share Print E-Mail Caption With this setup arbitrarily focused pulses and quasi-equidistant pulses could be generated. Credit IQOQI Innsbruck Usage Restrictions The picture may be used for editorial purposes only. It is protected by copyright. The use is free of charge if the reference is mentioned. Share Print E-Mail 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.