PHOTON SCIENCE

FLASH - Most cited publications                             (update: 2026-01-14)
(numbers from Web of Science) [Scopus numbers in square brackets]

Cited 1413 times (76x/year) [1710 times]:
W. Ackermann et al., Operation of a Free Electron Laser in the Wavelength Range from the Extreme Ultraviolet to the Water Window, Nature Photonics 1, 336-­342 (2007);
http://dx.doi.org/10.1038/nphoton.2007.76
(Machine)

Cited 862 times (45x/year) [950 times]:
Henry N. Chapman et al., Femtosecond diffractive imaging with a soft-­X-­ray free-­electron laser, Nature Physics 2, 839-­843 (2006);
http://dx.doi.org/10.1038/nphys461
(Diffraction/Imaging)

Cited 399 times (17x/year) [434 times]:
H. Wabnitz et al., Multiple ionization of atom clusters by intense soft X-rays from a free‐electron laser, Nature 420, 482-­485 (2002);
http://dx.doi.org/10.1038/nature01197
(Nonlinear Phenomena/Clusters)

Cited 339 times (20x/year) [395 times]:
K. Tiedtke et al., The soft X-ray free-electron laser FLASH at DESY: beamlines, diagnostics, and end stations, New J. Phys. 11, 023029 (2009);
http://dx.doi.org/10.1088/1367-2630/11/2/023029
(User Facility Paper)

Cited 306 times (12x/year) [366 times]:
J. Andruszkow et al., First Observation of Self-Amplified Spontaneous Emission in a Free-Electron Laser at 109 nm Wavelength, Phys. Rev. Lett. 85, 3825-3829 (2000);
http://dx.doi.org/10.1103/PhysRevLett.85.3825
(First lasing of a short-wavelength FEL)

Cited 263 times (16x/year) [305 times]:
U. Frühling et al., Single-shot terahertz-field-driven X-ray streak camera, Nature Photonics 3, 523-528 (2009);
http://dx.doi.org/10.1038/NPHOTON.2009.160 
(Pulse Length Diagnostics)

Cited 239 times (15x/year) [254 times]:
Bob Nagler et al.,Turning solid aluminium transparent by intense soft X-­ray photoionization, Nature Physics 5, 693-­696 (2009);
http://dx.doi.org/10.1038/NPHYS1341
(Nonlinear Phenomena/WDM)

Cited 234 times (13x/year) [249 times]:
A.A. Sorokin et al., Photoelectric Effect at Ultrahigh Intensities, Phys. Rev. Lett. 99, 213002 (2007);
http://dx.doi.org/10.1103/PhysRevLett.99.213002
(Nonlinear Phenomena/AMO)

Cited 215 times (12x/year) [234 times]:
Henry N. Chapman et al., Femtosecond Time-­Delay X-­ray Holography, Nature 448, 676-­679 (2007);
http://dx.doi.org/10.1038/nature06049
(Diffraction/Imaging)

Cited 195 times (11x/year) [218 times]:
A. Barty et al., Ultrafast single-shot diffraction imaging of nanoscale dynamics, Nature Photonics 2, 415-419 (2008);
http://dx.doi.org/10.1038/nphoton.2008.128
(Diffraction/Imaging)

Cited 187 times (14x/year) [210 times]:
I. Grguraš et al., Ultrafast X-ray pulse characterization at free-electron lasers, Nature Photonics 6, 852-857 (2012);
http://dx.doi.org/10.1038/NPHOTON.2012.276
(Pulse Length & Arrival Time Diagnostics)

Cited 178 times (12x/year) [194 times]:
Y. H. Jiang et al., Ultrafast Extreme Ultraviolet Induced Isomerization of Acetylene Cations, Phys. Rev. Lett. 105, 263002 (2010);
http://dx.doi.org/10.1103/PhysRevLett.105.263002
(AMO/Femto-Chemistry)

Cited 175 times (13x/year) [184 times]:
B. Pfau et al., Ultrafast optical demagnetization manipulates nanoscale spin structure in domain walls, Nat. Commun. 3:1100 (2012);
http://dx.doi.org/10.1038/ncomms2108
(Cond. Matter, Magnetism)

Cited 169 times (11x/year) [172 times]:
S. Hellmann et al., Ultrafast Melting of a Charge-Density Wave in the Mott Insulator 1T-TaS₂, Phys. Rev. Lett. 105, 187401 (2010);
http://dx.doi.org/10.1103/PhysRevLett.105.187401
(Cond. Matter, Phase Transition)

Cited 172 times (16x/year) [222 times]:
S. Schulz et al., Femtosecond all-optical synchronization of an X-ray free-electron laser, Nature Communications 6, 5938 (2015);
http://dx.doi.org/10.1038/ncomms6938
(Machine/Timing&Synchronization)

Cited 155 times (9x/year) [176 times]:
K.Tiedtke et al., Gas detectors for x-ray lasers, J. Appl. Phys. 103, 094511 (2008);
http://dx.doi.org/10.1063/1.2913328
(Pulse Intensity & Beam Position Diagnostics)

Cited 149 times (8x/year) [163 times]:
C. Bostedt et al., Multistep Ionization of Argon Clusters in intense femtosecond XUV pulses, Phys. Rev. Lett. 100, 133401 (2008);
http://dx.doi.org/10.1103/PhysRevLett.100.133401
(Nonlinear Phenomena/Clusters)

Cited 148 times (9x/year) [170 times]:
S. Marchesini et al., Massively parallel X-ray holography, Nature Photonics 2, 560-563 (2008);
http://dx.doi.org/10.1038/nphoton.2008.154
(Diffraction/Imaging)

FLASH -  Selection of highlight technical developments
[No. of citations from Scopus]

U. Frühling et al., Single-­shot THz field driven X-­‐ray streak-­camera, Nature Photonics 3, 523-­‐528 (2009);
http://dx.doi.org/10.1038/nphoton.2009.160 [305 citations]

S. Schulz et al., Femtosecond all-optical synchronization of an X-ray free-electron laser, Nature Communications 6, 5938 (2015);
http://dx.doi.org/10.1038/ncomms6938 [222 citations]

I. Grguraš et al., Ultrafast X-­ray pulse characterization at free-­electron lasers, Nature Photonics 6, 852-­‐857 (2012);
http://dx.doi.org/10.1038/NPHOTON.2012.276 [210 citations]

K. Tiedtke et al., Gas-­detector for X-­ray lasers, J. Appl. Phys. 103, 094511 (2008);
http://dx.doi.org/10.1063/1.2913328 [176 citations]

A.-L. Viotti et al., Multi-pass cells for post-compression of ultrashort laser pulses, Optica 9, 197-216 (2022);
https://doi.org/10.1364/OPTICA.449225  [177 citations -- already]

D. Kutnyakhov et al., Time- and momentum-resolved photoemission studies using time-of-flight momentum microscopy at a free-electron laser, Rev. Sci. Instrum. 91, 013109 (2020);
https://doi.org/10.1063/1.5118777   [81 citations]

  B. Keitel et al., Hartmann wavefront sensors and their application at FLASH,
  J. Synchrotron Rad. 23, 43-49 (2016);
  http://dx.doi.org/10.1107/S1600577515020354 [48 citations]