title: Generation of tunable single-frequency continuous-wave coherent vacuum-ultraviolet radiation.
abstract: Tunable single-frequency continuous-wave coherent VUV radiation is generated at lambda(VUV) = 143.6 nm by resonant frequency tripling in Mg. The frequency of the output of a frequency-stabilized dye ring laser (spectral width Deltaupsilon < 1 MHz) is tuned to the two-photon transition 3s(2)(1)S(0)-3s3d(1)D(2) (lambda = 430.9 nm) of Mg. A laser power of 0.2 W produces at the third harmonic more than 1.2 x 10(5) photons/sec (1.8 x 10(-13) W). Radiation generated by this method will provide laser VUV spectroscopy of highest spectral resolution.
authors.forename: A
authors.initials: A
authors.lastname: Timmermann
authors.forename: R
authors.initials: R
authors.lastname: Wallenstein