Concept for a laser guide beacon Shack–Hartmann wave-front sensor with dynamically steered subapertures

Christoph J. Baranec, Brian J. Bauman, Michael Lloyd-Hart

Research output: Contribution to journalArticle

9 Scopus citations

Abstract

We describe an innovative implementation of the Shack–Hartmann wave-front sensor that is designed to correct the perspective elongation of a laser guide beacon in adaptive optics. Subapertures are defined by the segments of a deformable mirror rather than by a conventional lenslet array. A bias tilt on each segment separates the beacon images on the sensor’s detector. One removes the perspective elongation by dynamically driving each segment with a predetermined open-loop signal that would, in the absence of atmospheric wave-front aberration, keep the corresponding beacon image centered on the subaperture’s optical axis.

Original languageEnglish (US)
Pages (from-to)693-695
Number of pages3
JournalOptics letters
Volume30
Issue number7
DOIs
StatePublished - Apr 1 2005

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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