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 >1012 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.
- Publication:
-
Review of Scientific Instruments
- Pub Date:
- November 2012
- DOI:
- 10.1063/1.4766962
- arXiv:
- arXiv:1704.03435
- Bibcode:
- 2012RScI...83k3103H
- Keywords:
-
- lamps;
- laser beams;
- light sources;
- monochromators;
- photoelectron spectra;
- photoemission;
- xenon;
- 41.85.Si;
- 42.72.-g;
- 42.60.Jf;
- Beam collimators monochromators;
- Optical sources and standards;
- Beam characteristics: profile intensity and power;
- spatial pattern formation;
- Physics - Instrumentation and Detectors;
- Condensed Matter - Materials Science
- E-Print:
- Review of Scientific Instruments 83, 113103 (2012)