Mainz 2017 – wissenschaftliches Programm
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A: Fachverband Atomphysik
A 29: Ultrashort Laser Pulses: Generation and Applications (with Q)
A 29.4: Vortrag
Donnerstag, 9. März 2017, 15:15–15:30, P 5
Design and simulation of a NOPA for the pulse diagnostics XUV PUMA at FLASH, DESY — •Niklas Borchers1,2, Martin Büscher1,2, Mark Prandolini3, Sven Toleikis3, Bert Struve1, and Ulrich Teubner1,2 — 1Institut für Laser und Optik, Hochschule Emden/Leer, D-26723 Emden — 2Institut für Physik, Universität Oldenburg, D-26129 Oldenburg — 3Deutsches Elektronen-Synchrotron DESY, D-22607 Hamburg
To allow precise measurement of the jitter and pulse duration of free electron lasers such as FLASH on a shot to shot basis novel techniques are necessary. Of course, this is a difficult task in the extreme ultra violet spectral region (4.2 to 45nm; XUV), in particular in combination with the ultrashort time scales (<50fs). A corresponding diagnostic which is based on a plasma gate is XUV PUMA (Pulsdauermeßapparatur), which is currently under development. As the resolution is mainly limited by the probe pulse, ultrashort tunable sub- 30fs pulses in a range from 580nm to 680nm wavelength with a pulse energy >1µJ are required for the cross correlator as one key element of the diagnostics. The pulses will be generated with a NOPCPA (non-collinear optical parametric chirped pulse amplifier). Prior to set-up, the NOPCPA has been simulated in all major aspects (SHG, dispersion, efficiency, etc.) using a tailored MATLAB program. With the aid of the simulation, a compact system, as required by the FLASH beamline end station, has been designed to optimally match the parameters required by the XUV PUMA. This work is sponsored by BMBF 05K16ME1.