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Proceedings Paper

Studies towards a directional polychromatic sodium laser guide star
Author(s): Felipe Pedreros Bustos; Alexander Akulshin; Ronald Holzlöhner; Simon Rochester; Dmitry Budker
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Paper Abstract

In this work we discuss a mechanism for generation of a coherent source of light from the mesosphere as a new concept of directional laser guide star. In contrast to the near-isotropic spontaneous emission, nonlinear processes in atomic vapors like amplified spontaneous emission can yield highly directional emission in the forward and backward directions. Along with directional emission, excited sodium atoms also radiate at different wavelength creating a polychromatic laser guide star (PLGS). If feasible, a directional PLGS would provide a net gain in the return flux of several orders of magnitude compared to traditional LGS schemes, making possible laser-guided tip/tilt-correction in adaptive optic systems.

Paper Details

Date Published: 10 July 2018
PDF: 11 pages
Proc. SPIE 10703, Adaptive Optics Systems VI, 107030R (10 July 2018); doi: 10.1117/12.2313757
Show Author Affiliations
Felipe Pedreros Bustos, Johannes Gutenberg Univ. Mainz (Germany)
Alexander Akulshin, Swinburne Univ. of Technology (Australia)
Ronald Holzlöhner, European Southern Observatory (Germany)
Simon Rochester, Rochester Scientific, LLC (United States)
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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