PUPIL PLANE WAVE-FRONT SENSING WITH AN OSCILLATING PRISM

Authors
Citation
R. Ragazzoni, PUPIL PLANE WAVE-FRONT SENSING WITH AN OSCILLATING PRISM, J. mod. opt., 43(2), 1996, pp. 289-293
Citations number
9
Categorie Soggetti
Optics
Journal title
ISSN journal
09500340
Volume
43
Issue
2
Year of publication
1996
Pages
289 - 293
Database
ISI
SICI code
0950-0340(1996)43:2<289:PPWSWA>2.0.ZU;2-3
Abstract
A compact pupil plane wavefront sensor is described, which is able to image on a single detector four images of the pupil, containing inform ation on the gradient of the incoming wavefront. The wavefront sensor consists of a lens relay and an oscillating pyramidal-shaped prism. Th e gain of the device is driven by the amplitude of the oscillations, w hile the sampling is determined by the focal length of the lens relay. This wavefront sensor can be conveniently used for astronomical adapt ive optics purposes because of its flexibility to match the brightness of the reference source used (varying the sampling) and the seeing co nditions (varying the gain).