Author Affiliations

Franz X. Kӓrtner,^1,2,3,4,5,* Koustuban Ravi,^1,2,5 Spencer W. Jolly,^1,3,6 Frederike Ahr,^1,2,3 Dongfang Zhang,^1,3 Xiaojun Wu,^1,2,4 Moein Fakhari,^1,2,4 Huseyin Cankaya,^1,2,4 Anne-Laure Calendron,^1,2,4 Chun Zhou,^1,3 Francois Lemery,^1,3,4 Wenchao Qiao,^1,2 Ronny W. Huang,^1,5 Sergio Carbajo,^1,2,4 Damian N. Schimpf,^1,2,4 Andreas R. Maier,^1,3 Michael Hemmer,^1,2,4 Luis Zapata,^1,2,4 Oliver D. Mücke,^1,2,4 Giovanni Cirmi,^1,2,4 Arya Fallahi,^1,2,4 Nicholas H. Matlis,^1,2,4 Hideki Ishizuki,⁷ and Takunori Taira⁷

¹Center for Free-Electron Laser Science, Notkestraße 85, 22607 Hamburg, Germany

²Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, 22607 Hamburg, Germany

³Physics Department, Universität Hamburg, Luruper Chaussee 149, 22761 Hamburg, Germany

⁴The Hamburg Center for Ultrafast Imaging, Universität Hamburg, Luruper Chaussee 149, 22761 Hamburg, Germany

⁵Department of Electrical Engineering and Computer Science and Research Laboratory of Electronics, Massachusetts Institute of Technology, 77 Massachusetts Ave, Cambridge, MA 02139, USA

⁶Institute of Physics of the ASCR, ELI-Beamlines project, Na Slovance 2, 18221 Prague, Czech Republic

⁷Laser Research Center, Institute for Molecular Science, 38 Nishigonaka, Myodaiji, Okazaki 444-8585, Japan

^*Corresponding author: franz.kaertner@cfel.de