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A laser guide star wavefront sensor bench demonstrator for TMT

Lardiere, Olivier; Conan, Rodolphe; Bradley, Colin; Jackson, Kate; Herriot, Glen

Description

Sodium laser guide stars (LGSs) allow, in theory, Adaptive Optics (AO) systems to reach a full sky coverage, but they have their own limitations. The artificial star is elongated due to the sodium layer thickness, and the temporal and spatial variability of the sodium atom density induces changing errors on wavefront measurements, especially with Extremely Large Telescopes (ELTs) for which the LGS elongation is larger. In the framework of the Thirty–Meter–Telescope project (TMT), the AO-Lab of...[Show more]

CollectionsANU Research Publications
Date published: 2008
Type: Journal article
URI: http://hdl.handle.net/1885/101110
Source: Optics Express
DOI: 10.1364/OE.16.005527

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