TY  - JOUR
AU  - Appi, Elisa
AU  - Papadopoulou, Christina
AU  - Mapa, Jose Louise
AU  - Wesavkar, Nishad
AU  - Jusko, Christoph
AU  - Mosel, Philip
AU  - Alisauskas, Skirmantas
AU  - Lang, Tino
AU  - Heyl, Christoph M.
AU  - Manschwetus, Bastian
AU  - Brachmanski, Maciej
AU  - Braune, Markus
AU  - Lindenblatt, Hannes
AU  - Trost, Florian
AU  - Meister, Severin
AU  - Schoch, Patrizia
AU  - Treusch, Rolf
AU  - Moshammer, Robert
AU  - Hartl, Ingmar
AU  - Morgner, Uwe
AU  - Kovacev, Milutin
TI  - A synchronized VUV light source based on high-order harmonic generation at FLASH
JO  - Scientific reports
VL  - 10
IS  - 1
SN  - 2045-2322
CY  - [London]
PB  - Macmillan Publishers Limited, part of Springer Nature
M1  - PUBDB-2020-02132
SP  - 6867
PY  - 2020
AB  - Ultrafast measurements in the extreme ultraviolet (XUV) spectral region targeting femtosecond timescales rely until today on two complementary XUV laser sources: free electron lasers (FELs) and high-harmonic generation (HHG) based sources. The combination of these two source types was until recently not realized. The complementary properties of both sources including broad bandwidth, high pulse energy, narrowband tunability and femtosecond timing, open new opportunities for two-color pump-probe studies. Here we show first results from the commissioning of a high-harmonic beamline that is fully synchronized with the free-electron laser FLASH, installed at beamline FL26 with permanent end-station including a reaction microscope (REMI). An optical parametric amplifier synchronized with the FEL burst mode drives the HHG process. First commissioning tests including electron momentum measurements using REMI, demonstrate long-term stability of the HHG source over more than 14 hours. This realization of the combination of these light sources will open new opportunities for time-resolved studies targeting different science cases including core-level ionization dynamics or the electron dynamics during the transformation of a molecule within a chemical reaction probed on femtosecond timescales in the ultraviolet to soft X-ray spectral region.
LB  - PUB:(DE-HGF)16
C6  - pmid:32322051
UR  - <Go to ISI:>//WOS:000560329100002
DO  - DOI:10.1038/s41598-020-63019-2
UR  - https://bib-pubdb1.desy.de/record/438673
ER  -