We use a 4th harmonic laser system from LEOS for angle resolved photoemission (ARPES).
This system allows us to do very challenging high-resolution ARPES experiments on micron-sized single crystals and has quickly evolved into one of our favorite research instruments.
It can be safely operated by non-specialists, provides a high UV power with good beam characteristics and works reliably even in the noisy environment of a standard UHV lab with permanently running mechanical pumps.
Phys. Rev. B, 87, 075113
Phys. Rev. X, 6, 031021
Phys. Rev. B, 94, 121112
Prof. Felix Baumberger
Department of Quantum Matter Physics University of Geneva and Swiss Lightsource-Paul Scherrer Institut