Narrowband Tunable VUV Radiation Generated By Frequency Mixing With Pulsed Single-Frequency Lasers

Third-and fifth-order sum-and difference frequency conversion of pulsed dye laser generates radiation in the vacuum ultraviolet at wavelengths λVUV 1 = 60 - 200 nm. The generated VUV light is of narrow spectral width (ΔE = 0.01 - 1 cm-1)anau high spectral intensity (0.03 - 104 W; 108 - 3.1013 photons/pulse). Because of their spectral brightness these VUV light sources are a powerful tool for VUV spectroscopy of atoms, molecules and solid states.