With its direct correspondence to electronic structure, angle-resolved photoemission spectroscopy (ARPES) is a ubiquitous tool for the study of solids. When extended to the temporal domain, time-resolved (TR)-ARPES offers the potential to move beyond equilibrium properties, exploring both the unoccupied electronic structure as well as its dynamical response under ultrafast perturbation. Historically, ultrafast extreme ultraviolet sources employing high-order harmonic generation (HHG) have required compromises that make it challenging to achieve a high energy resolution—which is highly desirable for many TR-ARPES studies—while producing high photon energies and a high photon flux. We address this challenge by performing HHG inside a femtosecond enhancement cavity, realizing a practical source for TR-ARPES that achieves a flux of over 1011 photons/s delivered to the sample, operates over a range of 8–40 eV with a repetition rate of 60 MHz. This source enables TR-ARPES studies with a temporal and energy resolution of 190 fs and 22 meV, respectively. To characterize the system, we perform ARPES measurements of polycrystalline Au and MoTe2, as well as TR-ARPES studies on graphite.
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August 2019
Research Article|
August 08 2019
Cavity-enhanced high harmonic generation for extreme ultraviolet time- and angle-resolved photoemission spectroscopy
A. K. Mills
;
A. K. Mills
1
Department of Physics and Astronomy, University of British Columbia
, Vancouver, British Columbia V6T 1Z1, Canada
2
Quantum Matter Institute, University of British Columbia
, Vancouver, British Columbia V6T 1Z4, Canada
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S. Zhdanovich
;
S. Zhdanovich
1
Department of Physics and Astronomy, University of British Columbia
, Vancouver, British Columbia V6T 1Z1, Canada
2
Quantum Matter Institute, University of British Columbia
, Vancouver, British Columbia V6T 1Z4, Canada
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M. X. Na;
M. X. Na
1
Department of Physics and Astronomy, University of British Columbia
, Vancouver, British Columbia V6T 1Z1, Canada
2
Quantum Matter Institute, University of British Columbia
, Vancouver, British Columbia V6T 1Z4, Canada
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F. Boschini
;
F. Boschini
1
Department of Physics and Astronomy, University of British Columbia
, Vancouver, British Columbia V6T 1Z1, Canada
2
Quantum Matter Institute, University of British Columbia
, Vancouver, British Columbia V6T 1Z4, Canada
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E. Razzoli
;
E. Razzoli
1
Department of Physics and Astronomy, University of British Columbia
, Vancouver, British Columbia V6T 1Z1, Canada
2
Quantum Matter Institute, University of British Columbia
, Vancouver, British Columbia V6T 1Z4, Canada
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M. Michiardi
;
M. Michiardi
1
Department of Physics and Astronomy, University of British Columbia
, Vancouver, British Columbia V6T 1Z1, Canada
2
Quantum Matter Institute, University of British Columbia
, Vancouver, British Columbia V6T 1Z4, Canada
3
Max Planck Institute for Chemical Physics of Solids
, 01187 Dresden, Germany
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A. Sheyerman
;
A. Sheyerman
1
Department of Physics and Astronomy, University of British Columbia
, Vancouver, British Columbia V6T 1Z1, Canada
2
Quantum Matter Institute, University of British Columbia
, Vancouver, British Columbia V6T 1Z4, Canada
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M. Schneider
;
M. Schneider
1
Department of Physics and Astronomy, University of British Columbia
, Vancouver, British Columbia V6T 1Z1, Canada
2
Quantum Matter Institute, University of British Columbia
, Vancouver, British Columbia V6T 1Z4, Canada
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T. J. Hammond
;
T. J. Hammond
a)
1
Department of Physics and Astronomy, University of British Columbia
, Vancouver, British Columbia V6T 1Z1, Canada
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V. Süss;
V. Süss
3
Max Planck Institute for Chemical Physics of Solids
, 01187 Dresden, Germany
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C. Felser
;
C. Felser
3
Max Planck Institute for Chemical Physics of Solids
, 01187 Dresden, Germany
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A. Damascelli
;
A. Damascelli
1
Department of Physics and Astronomy, University of British Columbia
, Vancouver, British Columbia V6T 1Z1, Canada
2
Quantum Matter Institute, University of British Columbia
, Vancouver, British Columbia V6T 1Z4, Canada
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D. J. Jones
D. J. Jones
b)
1
Department of Physics and Astronomy, University of British Columbia
, Vancouver, British Columbia V6T 1Z1, Canada
2
Quantum Matter Institute, University of British Columbia
, Vancouver, British Columbia V6T 1Z4, Canada
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a)
Currently at: Department of Physics, University of Windsor, Windsor, Ontario N9B 3P4, Canada
b)
Electronic mail: [email protected]
Rev. Sci. Instrum. 90, 083001 (2019)
Article history
Received:
January 28 2019
Accepted:
July 14 2019
Citation
A. K. Mills, S. Zhdanovich, M. X. Na, F. Boschini, E. Razzoli, M. Michiardi, A. Sheyerman, M. Schneider, T. J. Hammond, V. Süss, C. Felser, A. Damascelli, D. J. Jones; Cavity-enhanced high harmonic generation for extreme ultraviolet time- and angle-resolved photoemission spectroscopy. Rev. Sci. Instrum. 1 August 2019; 90 (8): 083001. https://doi.org/10.1063/1.5090507
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