| Issue |
Ann. Phys. Fr.
Volume 32, Number 2-3, 2007
COLOQ'1010th conference on lasers and quantum optics
|
|
|---|---|---|
| Page(s) | 83 - 85 | |
| Section | Short contributions | |
| DOI | https://doi.org/10.1051/anphys:2008013 | |
| Published online | 23 May 2008 | |
High power modeless lasers for sodium laser guide stars
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: jean-paul.pique@ujf-grenoble.fr
An increasing number of adaptive optics systems in astronomy uses a sodium Laser Guide Star (LGS). The analysis of the distorsion of the return fluorescence requires high power lasers. We expose here two modeless laser amplifiers, based on a longitudinaly pumped 1 cm-long dye cell: the first one is a 4-pass amplifier at 589 nm pumped at 532 nm and the second one is a 4-pass amplifier at 660 nm pomped at 511 and 578 nm. These systems correspond respectively to the monochromatic and the polychromatic laser guide stars.
© EDP Sciences, 2008