High-resolution MHz time- and angle-resolved photoemission spectroscopy based on a tunable vacuum ultraviolet source

Lukas Hellbrück; Michele Puppin; Fei Guo; Daniel D Hickstein; Siham Benhabib; Marco Grioni; J Hugo Dil; Thomas LaGrange; Henrik M Rønnow; Fabrizio Carbone

doi:10.1063/5.0179549

High-resolution MHz time- and angle-resolved photoemission spectroscopy based on a tunable vacuum ultraviolet source

Rev Sci Instrum. 2024 Mar 1;95(3):033007. doi: 10.1063/5.0179549.

Authors

Lukas Hellbrück^{1

2

3}, Michele Puppin³, Fei Guo⁴, Daniel D Hickstein^{5

6}, Siham Benhabib^{1

7}, Marco Grioni⁸, J Hugo Dil⁴, Thomas LaGrange¹, Henrik M Rønnow², Fabrizio Carbone^{1

3}

Affiliations

¹ Institute of Physics, Laboratory for Ultrafast Microscopy and Electron Scattering (LUMES), École Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland.
² Institute of Physics, Laboratory for Quantum Magnetism (LQM), École Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland.
³ Lausanne Centre for Ultrafast Science (LACUS), École Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland.
⁴ Institute of Physics, Spin Orbit Interaction Spectroscopy (SOIS), École Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland.
⁵ Kapteyn-Murnane Laboratories, 4775 Walnut Street Suite 102, Boulder, Colorado 80301, USA.
⁶ Octave Photonics, 325 W South Boulder Rd. Suite B1, Louisville, Colorado 80027, USA.
⁷ Laboratoire de Physique des Solides, Phénomènes Ultrarapides Lumière-Solides (PULS), Université Paris-Saclay, FR-91191 Gif-sur-Yvette, France.
⁸ Laboratory of Electron Spectroscopy (LSE), École Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland.

PMID: 38517259
DOI: 10.1063/5.0179549

Abstract

The time- and angle-resolved photoemission spectroscopy (trARPES) allows for direct mapping of the electronic band structure and its dynamic response on femtosecond timescales. Here, we present a new ARPES system, powered by a new fiber-based femtosecond light source in the vacuum ultraviolet range, accessing the complete first Brillouin zone for most materials. We present trARPES data on Au(111), polycrystalline Au, Bi2Se3, and TaTe2, demonstrating an energy resolution of 21 meV with a time resolution of <360 fs, at a high repetition rate of 1 MHz. The system is integrated with an extreme ultraviolet high harmonic generation beamline, enabling an excellent tunability of the time-bandwidth resolution.