title: A tunable low-energy photon source for high-resolution angle-resolved photoemission spectroscopy.
abstract: We describe a tunable low-energy photon source consisting of a laser-driven xenon plasma lamp coupled to a Czerny-Turner monochromator. The combined tunability, brightness, and narrow spectral bandwidth make this light source useful in laboratory-based high-resolution photoemission spectroscopy experiments. The source supplies photons with energies up to ~7 eV, delivering under typical conditions >10(12) ph/s within a 10 meV spectral bandwidth, which is comparable to helium plasma lamps and many synchrotron beamlines. We first describe the lamp and monochromator system and then characterize its output, with attention to those parameters which are of interest for photoemission experiments. Finally, we present angle-resolved photoemission spectroscopy data using the light source and compare its performance to a conventional helium plasma lamp.
authors.affiliation: Laboratory of Atomic and Solid State Physics, Department of Physics, Cornell University, Ithaca, New York 14853, USA.
authors.forename: John W
authors.initials: JW
authors.lastname: Harter
authors.forename: Philip D C
authors.initials: PD
authors.lastname: King
authors.forename: Eric J
authors.initials: EJ
authors.lastname: Monkman
authors.forename: Daniel E
authors.initials: DE
authors.lastname: Shai
authors.forename: Yuefeng
authors.initials: Y
authors.lastname: Nie
authors.forename: Masaki
authors.initials: M
authors.lastname: Uchida
authors.forename: Bulat
authors.initials: B
authors.lastname: Burganov
authors.forename: Shouvik
authors.initials: S
authors.lastname: Chatterjee
authors.forename: Kyle M
authors.initials: KM
authors.lastname: Shen