Asynchronous sampling for ultrafast experiments with low momentum compaction at the ANKA ring

Abstract

A high-repetition-rate pump-probe experiment is presented, based on the asynchronous sampling approach. The low- mode at the synchrotron ANKA can be used for a time resolution down to the picosecond limit for the time-domain sampling of the coherent THz emission as well as for hard X-ray pump-probe experiments, which probe structural dynamics in the condensed phase. It is shown that a synchronization of better than 1 ps is achieved, and examples of phonon dynamics of semiconductors are presented. © 2011 International Union of Crystallography Printed in Singapore - all rights reserved.