Cavity-enhanced high harmonic generation for extreme ultraviolet time- and angle-resolved photoemission spectroscopy

Mills AK, Zhdanovich S, Na MX, Boschini F, Razzoli E, Michiardi M, Sheyerman A, Schneider M, Hammond TJ, Suess V, Felser C, Damascelli A, Jones DJ (2019)

Publication Type: Journal article

Publication year: 2019

Journal

Review of Scientific Instruments

Book Volume: 90

Article Number: 083001

Journal Issue: 8

DOI: 10.1063/1.5090507

Abstract

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.

Involved external institutions

University of British Columbia CA Canada (CA) Max-Planck-Institut für Chemische Physik fester Stoffe (MPI CPfS) / Max Planck Institute for Chemical Physics of Solids DE Germany (DE)

How to cite

APA:

Mills, A.K., Zhdanovich, S., Na, M.X., Boschini, F., Razzoli, E., Michiardi, M.,... Jones, D.J. (2019). Cavity-enhanced high harmonic generation for extreme ultraviolet time- and angle-resolved photoemission spectroscopy. Review of Scientific Instruments, 90(8). https://doi.org/10.1063/1.5090507

MLA:

Mills, A. K., et al. "Cavity-enhanced high harmonic generation for extreme ultraviolet time- and angle-resolved photoemission spectroscopy." Review of Scientific Instruments 90.8 (2019).

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