Tunable vacuum ultraviolet laser based spectrometer for angle resolved photoemission spectroscopy

Journal Article · Sat Mar 15 00:00:00 EDT 2014 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.4867517· OSTI ID:22254996

Jiang, Rui; Mou, Daixiang; Wu, Yun; Huang, Lunan; Kaminski, Adam ^[1]; McMillen, Colin D.; Kolis, Joseph ^[2]; Giesber, Henry G.; Egan, John J. ^[3]

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

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 10{sup 14} photon/s. We demonstrate that this energy range is sufficient to measure the k{sub z} dispersion in an iron arsenic high temperature superconductor, which was previously only possible at synchrotron facilities.

• OSTI ID: 22254996
• Journal Information: Review of Scientific Instruments, Vol. 85, Issue 3; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0034-6748
• Country of Publication: United States
• Language: English

Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
ARSENIC
BERYLLIUM
EV RANGE 01-10
FLUOROBORATES
HARMONIC GENERATION
HIGH-TC SUPERCONDUCTORS
IRON
LASERS
PHOTOEMISSION
PHOTONS
POTASSIUM
SAPPHIRE
SPECTROMETERS
SPECTROSCOPY
SYNCHROTRONS
ULTRAVIOLET RADIATION