Sum-frequency mixing and phase matching in a mercury ablation plume
Laboratoire de Physique des Lasers, C.N.R.S / Université Paris 13 Institut Galilée, 99 av. Jean-Baptiste Clément 93430 Villetaneuse
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We report on laser-induced vaporization of mercury as a simple tool to increase the efficiency of a resonant 4-wave mixing process to produce VUV radiation near 125 nm. The specificity of this new nonlinear medium is discussed for the best experimental conditions giving a high density of ground state Hg atoms in a column-shape plume. Modification of phase-matching conditions is demonstrated in agreement with VUV profile simulations.
© Owned by the authors, published by EDP Sciences, 2011