期刊
REVIEW OF SCIENTIFIC INSTRUMENTS
卷 87, 期 1, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.4939759
关键词
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资金
- National Science Foundation under SBIR Grant [0848526]
- Stanford Graduate Fellowship
- Department of Energy, Office of Basic Energy Sciences, Division of Materials Sciences and Engineering
We developed a table-top vacuum ultraviolet (VUV) laser with 113.778 nm wavelength (10.897 eV) and demonstrated its viability as a photon source for high resolution angle-resolved photoemission spectroscopy (ARPES). This sub-nanosecond pulsed VUV laser operates at a repetition rate of 10 MHz, provides a flux of 2 x 10(12) photons/s, and enables photoemission with energy and momentum resolutions better than 2 meV and 0.012 angstrom(-1), respectively. Space-charge induced energy shifts and spectral broadenings can be reduced below 2 meV. The setup reaches electron momenta up to 1.2 angstrom(-1), granting full access to the first Brillouin zone of most materials. Control over the linear polarization, repetition rate, and photon flux of the VUV source facilitates ARPES investigations of a broad range of quantum materials, bridging the application gap between contemporary low energy laser-based ARPES and synchrotron-based ARPES. We describe the principles and operational characteristics of this source and showcase its performance for rare earth metal tritellurides, high temperature cuprate superconductors, and iron-based superconductors. (C) 2016 AIP Publishing LLC.
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