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Proceedings Paper

Simulations of continuous-wave sodium laser guide stars with polarization modulation at Larmor frequency
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Paper Abstract

The return flux from a sodium laser guide star suffers, at large angles between the geomagnetic field and the laser beam, from the reduction in optical pumping due to spin-precession of sodium atoms. This detrimental effect can be mitigated by modulating the circular polarization of a continuous-wave laser beam in resonance with the Larmor frequency of sodium atoms in the mesosphere. We present an investigation based on numerical modeling to evaluate the brightness enhancement of a laser guide star with polarization modulation of a continuous-wave laser beam at different observatories.

Paper Details

Date Published: 17 July 2018
PDF: 9 pages
Proc. SPIE 10703, Adaptive Optics Systems VI, 107033R (17 July 2018); doi: 10.1117/12.2313694
Show Author Affiliations
Felipe Pedreros Bustos, Johannes Gutenberg Univ. Mainz (Germany)
Ronald Holzlöhner, European Southern Observatory (Germany)
Simon Rochester, Rochester Scientific, LLC (United States)
Domenico Bonaccini Calia, European Southern Observatory (Germany)
Joschua Hellemeier, The Univ. of British Columbia (Canada)
Dmitry Budker, Johannes Gutenberg Univ. Mainz (Germany)

Published in SPIE Proceedings Vol. 10703:
Adaptive Optics Systems VI
Laird M. Close; Laura Schreiber; Dirk Schmidt, Editor(s)

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