Erlangen 2018 – wissenschaftliches Programm
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K: Fachverband Kurzzeit- und angewandte Laserphysik
K 6: Poster
K 6.7: Poster
Mittwoch, 7. März 2018, 16:15–18:15, Orangerie
Synchronous VUV light source for FLASH II — •Elisa Appi1, Eike Lübking1, Tino Lang2, Christoph Heyl2, Ingmar Hartl2, Robert Moshammer3, Uwe Morgner1, and Milutin Kovacev1 — 1Institut für Quantenoptik, Leibniz Universität Hannover, Welfengarten 1, 30167 Hannover — 2DESY, Notkestrasse 85, D-22607 Hamburg — 3Max Planck Institute of Nuclear Physics, D-69117 Heidelberg
The design of a VUV radiation source, based on high harmonic generation (HHG), is presented. Driven by 700-900nm femtosecond laser pulses and their harmonics, it will generate femtosecond pulses with photon energies between 10 and 40 eV. The source will be installed as a permanent device for the free electron laser FLASH II at DESY and the VUV pulses will be optically synchronized with the FLASH burst. The challenge of the project is the high pulse repetition rate in the burst of the FLASH, which limits the pulse energy of the IR driver. Due to the low available pump energy a highly efficient HHG process is required and different HHG schemes are been evaluated to obtain the highest photon fluxes in the spectral range of interest. First experiments on single-molecule spectroscopy will be performed on the installed reaction microscope (REMI) using the new VUV-FLASH pump-probe capabilities.