  We describe a spin- and angle-resolved photoelectron spectroscopy (SARPES)
apparatus with a vacuum-ultraviolet (VUV) laser ($h\nu$= 6.994 eV) developed at
the Laser and Synchrotron Research Center at the Institute for Solid State
Physics, The University of Tokyo. The spectrometer consists of a hemispherical
photoelectron analyzer equipped with an electron deflector function and twin
very-low-energy-electron-diffraction-type spin detectors, which allows us to
analyze the spin vector of a photoelectron three-dimensionally with both high
energy and angular resolutions. The combination of the high-performance
spectrometer and the high-photon-flux VUV laser can achieve an energy
resolution of 1.7 meV for SARPES. We demonstrate that the present laser-SARPES
machine realizes a quick SARPES on the spin-split band structure of a Bi(111)
film even with 7 meV energy and 0.7$^\circ$ angular resolutions along the
entrance-slit direction. This laser-SARPES machine is applicable to the
investigation of spin-dependent electronic states on an energy scale of a few
meV.
