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Proceedings Paper

Laser guide star return flux simulations based on observed sodium density profiles
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Paper Abstract

We extend previous sodium LGS models by integrating the return flux across the mesosphere, taking into account variable mesospheric gas density, temperature, and local sodium density. This method allows us to produce accurate predictions of the actual return flux on the ground, relevant for determining the performance of adaptive-opticsassisted instruments. We find that the flux distribution across the sky depends strongly on geographic location and laser parameters. Almost independent of location, future sodium LGS will be about three times brighter at zenith than at the observing horizon.

Paper Details

Date Published: 28 July 2010
PDF: 10 pages
Proc. SPIE 7736, Adaptive Optics Systems II, 77360V (28 July 2010); doi: 10.1117/12.856721
Show Author Affiliations
Ronald Holzlöhner, European Organisation for Astronomical Research in the Southern Hemisphere (Germany)
Simon M. Rochester, Univ. of California, Berkeley (United States)
Thomas Pfrommer, The Univ. of British Columbia (Canada)
Domenico Bonaccini Calia, European Organisation for Astronomical Research in the Southern Hemisphere (Germany)
Dmitry Budker, Univ. of California, Berkeley (United States)
James M. Higbie, Bucknell Univ. (United States)
Wolfgang Hackenberg, European Organisation for Astronomical Research in the Southern Hemisphere (Germany)


Published in SPIE Proceedings Vol. 7736:
Adaptive Optics Systems II
Brent L. Ellerbroek; Michael Hart; Norbert Hubin; Peter L. Wizinowich, Editor(s)

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