2007/11/02 by Guodong Liu, Guiling Wang, Yong Zhu +12 · 1 citation
Physics and Astronomy · #cond-mat.supr-con #cond-mat.str-el
paper · pdf · doi:10.1063/1.2835901
published as REVIEW OF SCIENTIFIC INSTRUMENTS 79, 023105 (2008) · 29 pages, 10 figures, submitted to Review of Scientific Instruments
arxiv created 2007/11/02 · arxiv updated 2009/12/01
The design and performance of the first vacuum ultra-violet (VUV) laser-based angle-resolved photoemission (ARPES) system are described. The VUV laser with a photon energy of 6.994 eV and bandwidth of 0.26 meV is achieved from the second harmonic generation using a novel non-linear optical crystal KBe2BO3F2 (KBBF). The new VUV laser-based ARPES system exhibits superior performance, including super-high energy resolution better than 1 meV, high momentum resolution, super-high photon flux and much enhanced bulk sensitivity, which are demonstrated from measurements on a typical Bi2Sr2CaCu2O8 high temperature superconductor. Issues and further development related to the VUV laser-based photoemission technique are discussed.