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Proceedings Paper

Rayleigh laser guide star wavefront sensing
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Paper Abstract

Rayleigh laser guide stars are an interesting tool to probe the atmospheric turbulence in astronomical adaptive optics. Conventional wavefront sensors can be applied at the expense of a restriction of the beacon range, usually realized by gating techniques, which translates into a very inefficient use of the light. Some alternative solutions to this inconvenient are presented in this paper, leading to the introduction of a new wavefront sensing concept. The idea is to place in the focal plane area an optical element whose section does not change for the conjugation to different ranges from the telescope aperture, hence the z-invariant name of the concept.

Paper Details

Date Published: 4 February 2002
PDF: 7 pages
Proc. SPIE 4494, Adaptive Optics Systems and Technology II, (4 February 2002); doi: 10.1117/12.454799
Show Author Affiliations
Roberto Ragazzoni, Osservatorio Astronomico di Padova (Italy)
Emiliano Diolaiti, Univ. degli Studi di Padova (Italy)
Massimiliano Tordi, Osservatorio Astronomico di Padova (Italy)


Published in SPIE Proceedings Vol. 4494:
Adaptive Optics Systems and Technology II
Robert K. Tyson; Domenico Bonaccini; Michael C. Roggemann, Editor(s)

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