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 language | English (US) |
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Pages (from-to) | 693-695 |
Number of pages | 3 |
Journal | Optics letters |
Volume | 30 |
Issue number | 7 |
DOIs | |
State | Published - Apr 1 2005 |
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics