Published March 2014 | Version v1
Journal article

Tunable vacuum ultraviolet laser based spectrometer for angle resolved photoemission spectroscopy

  • 1. Department of Physics and Astronomy, Iowa State University, Ames, Iowa 50011 (United States)
  • 2. Division of Materials Science and Engineering, Ames Laboratory, Ames, Iowa 50011 (United States)
  • 3. Department of Chemistry, Clemson University, Clemson, South Carolina 29634 (United States)
  • 4. Advanced Photonic Crystals LLC, Fort Mill, South Carolina 29708 (United States)

Description

We have developed an angle-resolved photoemission spectrometer with tunable vacuum ultraviolet laser as a photon source. The photon source is based on the fourth harmonic generation of a near IR beam from a Ti:sapphire laser pumped by a CW green laser and tunable between 5.3 eV and 7 eV. The most important part of the set-up is a compact, vacuum enclosed fourth harmonic generator based on potassium beryllium fluoroborate crystals, grown hydrothermally in the US. This source can deliver a photon flux of over 1014 photon/s. We demonstrate that this energy range is sufficient to measure the kz dispersion in an iron arsenic high temperature superconductor, which was previously only possible at synchrotron facilities

Additional details

Identifiers

Publishing Information

Journal Title
Review of Scientific Instruments
Journal Volume
85
Journal Issue
3
Journal Page Range
p. 033902-033902.5
ISSN
0034-6748
CODEN
RSINAK

Optional Information

Notes
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