Laboratoire de Physique des Lasers, associé au CNRS (URA 282), Universit'e Paris-Nord, Av. J.B. Clément, 93430, Villetaneuse, France
Abstract:
Cascade double resonance saturation spectroscopy was performed on the Mg 3s 1S0-3p 1P1-5s 1S0 transitions. A strong dye laser at 571 nm induced an inverted dip on the 285 nm resonance line transmission spectrum probed by a second, frequency doubled, dye laser. New values for the isotopic shifts of the visible transition were obtained.