TY  - CHAP
AU  - Schäfer, Bernd
AU  - Flöter, Bernhard
AU  - Mey, Tobias
AU  - Mann, Klaus
TI  - Wavefront and Coherence Characteristics of Extreme UV and Soft X-ray Sources
VL  - 134
CY  - Cham
PB  - Springer International Publishing
M1  - PUBDB-2021-00656
SN  - 978-3-030-34412-2 (print)
T2  - Topics in Applied Physics
SP  - 531 - 548
PY  - 2020
AB  - The first part of this chapter comprises setups and results of the determination of wavefront and beam parameters for different EUV sources (free-electron lasers, HHG-sources, synchrotron radiation) by self supporting Hartmann-Sensors. We present here i.a. a sensor applied for alignment of the ellipsodial mirror at FLASH beamline 2, yielding a reduction of the rms-wavefront aberrations by more than a factor of 3. In the second part we report on the characterization of the Free-Electron-Laser FLASH at DESY by a quantitative determination of the Wigner distribution function. The setup, comprising an ellipsodial mirror and a moveable extreme UV sensitive CCD detector, enables the mapping of two-dimensional phase space corresponding to the horizontal and vertical coordinate axes, respectively. Furthermore, an extended setup utilizing a torodial mirror for complete 4D-Wigner reconstruction has been accomplished and tested using radiation from a multimode Nd:VO4 laser.
LB  - PUB:(DE-HGF)7
UR  - <Go to ISI:>//WOS:000546519000021
DO  - DOI:10.1007/978-3-030-34413-9_20
UR  - https://bib-pubdb1.desy.de/record/454662
ER  -