Highly Flexible Pump-Probe Laser for the Soft-X-Ray Free ElectronLaser FLASH

Abstract

We report on a OPCPA-based ultrafast pump-probe laser system, which was recently added to the FLASH2 beamline ofthe superconducting, high repetition-rate XUV and soft X-ray free-electron laser (FEL) FLASH. The laser system ishighly flexible in pulse-duration, center-wavelength and repetition-frequency to serve the various demands of pumpprobeexperiments