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Measurement of efficiency of three-stage photoionization of neodymium atoms

I. S. Grigor’ev, Aleksei B D'yachkov, С. К. Ковалевич, Valerii P Labozin, Sergei M. Mironov, Valerii A Firsov, Gleb O. Tsvetkov, G. G. Shatalova

Published Jan 1, 2005• 0 citations
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Isotopically selective resonance ionization of mercury atoms has been accomplished by three-step excitation via the 6 3P1 and 8 1S0 excited states. Three collinear beams, respectively 254, 286, and 532 nm, from two dye lasers and a pulsed neodymium:yttrium aluminum garnet (ND:YAG) pump laser, were passed through a closed mercury vapor cell containing electrodes to which the ions were drawn by an electric field. The ion current and the 254-nm fluorescence radiation were measured as a function of laser wavelengths. Hyperfine structures for the 254- and 286-nm transitions were observed.