Experimental setup for low-energy laser-based angle resolved photoemission spectroscopy

Journal Article · Tue May 15 00:00:00 EDT 2007 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.2722413· OSTI ID:20953451

Koralek, J D; Douglas, J F; Plumb, N C; Griffith, J D; Cundiff, S T; Kapteyn, H C; Murnane, M M; Dessau, D S ^[1]

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1. Department of Physics, University of Colorado, Boulder, Colorado 80309-0390 and JILA, University of Colorado and NIST, Boulder, Colorado 80309-0440 (United States)

A laser-based angle resolved photoemission (ARPES) system utilizing 6 eV photons from the fourth harmonic of a mode-locked Ti:sapphire oscillator is described. This light source greatly increases the momentum resolution and photoelectron count rate, while reducing extrinsic background and surface sensitivity relative to higher energy light sources. In this review, the optical system is described, and special experimental considerations for low-energy ARPES are discussed. The calibration of the hemispherical electron analyzer for good low-energy angle-mode performance is also described. Finally, data from the heavily studied high T{sub c} superconductor Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub 8+{delta}} (Bi2212) is compared to the results from higher photon energies.

• OSTI ID: 20953451
• Journal Information: Review of Scientific Instruments, Vol. 78, Issue 5; Other Information: DOI: 10.1063/1.2722413; (c) 2007 American Institute of Physics; 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
36 MATERIALS SCIENCE
BISMUTH OXIDES
CALCIUM OXIDES
CALIBRATION
COPPER OXIDES
COUNTING RATES
HIGH-TC SUPERCONDUCTORS
LASERS
LIGHT SOURCES
MODE LOCKING
OPTICAL SYSTEMS
PERFORMANCE
PHOTOELECTRON SPECTROSCOPY
PHOTOEMISSION
PHOTONS
RESOLUTION
SAPPHIRE
SENSITIVITY
STRONTIUM OXIDES
TITANIUM