Sodium UV modeless laser excitation for PLGS
Laboratoire de Spectrométrie Physique, Université Joseph Fourier,
UMR 5588 CNRS-Grenoble I, 140 avenue de la Physique, B.P. 87, 38402 Saint Martin d'Hères, France
Corresponding author: email@example.com
In the framework of Laser Guide Star projects and more particularly of VASAO project of the Canada France Hawaii Telescope, we have developed a modeless laser at 330 nm and we have carried out photometry experiments in laboratory, in order to evaluate the feasibility of the sodium atom excitation at 330 nm. Our modeless laser is a DCM dye laser frequency doubled by a BBO crystal. A high efficiency acousto-optical crystal assures the modeless property. We present the experimental results of sodium atom excitation of 3S1/2 4P3/2 transition at 330.24 nm and 3S1/2 3P3/2 transition at 589 nm. The rate equation model gives a good interpretation of the experimental results.
© EDP Sciences, 2008