High resolution time- and angle-resolved photoemission spectroscopy with 11 eV laser pulses
Name
1910.14068.pdf
Description
Submitted version
Size
1.46 MB
Format
Adobe PDF
Checksum (MD5)
cadee0535b5bee0089945ee6f24d00d4
Author(s)
Lee, Changmin
Rohwer, Timm
Sie, Edbert Jarvis
Zhong, Alfred
Baldini, Edoardo
Gardner, Dillion R.
Lee, Young S
Gedik, Nuh
Date Issued
April 2020
Journal
Review of Scientific Instruments
Publisher
AIP Publishing
Citation
Lee, Changmin et al. “High resolution time- and angle-resolved photoemission spectroscopy with 11 eV laser pulses.” Review of Scientific Instruments, 91, 4 (April 2020): 043102 © 2020 The Author(s)
Version
Original manuscript
Abstract
Performing time- and angle-resolved photoemission (tr-ARPES) spectroscopy at high momenta necessitates extreme ultraviolet laser pulses, which are typically produced via high harmonic generation (HHG). Despite recent advances, HHG-based setups still require large pulse energies (from hundreds of μJ to mJ) and their energy resolution is limited to tens of meV. Here, we present a novel 11 eV tr-ARPES setup that generates a flux of 5 × 1010 photons/s and achieves an unprecedented energy resolution of 16 meV. It can be operated at high repetition rates (up to 250 kHz) while using input pulse energies down to 3 μJ. We demonstrate these unique capabilities by simultaneously capturing the energy and momentum resolved dynamics in two well-separated momentum space regions of a charge density wave material ErTe3. This novel setup offers the opportunity to study the non-equilibrium band structure of solids with exceptional energy and time resolutions at high repetition rates.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Materials Research Laboratory
Terms of Use
Creative Commons Attribution-Noncommercial-Share Alike
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DOI of Published Version
https://doi.org/10.1063/1.5139556
