@article{12136,
  author = {Steffen Eich and A. Stange and A.V. Carr and J. Urbancic and Tenio Popmintchev and M. Wiesenmayer and K. Jansen and A. Ruffing and S. Jakobs and T. Rohwer and S. Hellmann and C. Chen and Piotr Matyba and L. Kipp and Kai Rossnagel and M. Bauer and Margaret Murnane and Henry Kapteyn and Stefan Mathias and Martin Aeschlimann},
  title = {Time- and angle-resolved photoemission spectroscopy with optimized high-harmonic pulses using frequency-doubled Ti:Sapphire lasers},
  abstract = {<p>Time- and angle-resolved photoemission spectroscopy (trARPES) using femtosecond extreme ultraviolet high harmonics has recently emerged as a powerful tool for investigating ultrafast quasiparticle dynamics in correlated-electron materials. However, the full potential of this approach has not yet been achieved because, to date, high harmonics generated by 800nm wavelength Ti:Sapphire lasers required a trade-off between photon flux, energy and time resolution. Photoemission spectroscopy requires a quasi-monochromatic output, but dispersive optical elements that select a single harmonic can significantly reduce the photon flux and time resolution. Here we show that 400nm driven high harmonic extreme-ultraviolet trARPES is superior to using 800nm laser drivers since it eliminates the need for any spectral selection, thereby increasing photon flux and energy resolution to &lt;150meV while preserving excellent time resolution of about 30fs.</p>
},
  year = {2020},
  journal = {Journal of Electron Spectroscopy and Related Phenomena},
  volume = {195},
  chapter = {231-236},
  pages = {231-236},
  month = {2020-08},
  issn = {0368-2048},
  url = {http://www.sciencedirect.com/science/article/pii/S036820481400108X},
  doi = {10.1016/j.elspec.2014.04.013},
}