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Optics Letters

Optics Letters


  • Vol. 24, Iss. 24 — Dec. 15, 1999
  • pp: 1796–1798

Hartmann wave-front scanner

Vincent Laude, Ségolène Olivier, Carine Dirson, and Jean-Pierre Huignard  »View Author Affiliations

Optics Letters, Vol. 24, Issue 24, pp. 1796-1798 (1999)

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A wave-front sensor is described that uses a programmable moving aperture to scan an incoming wave front. The position of the diffraction spot is recorded behind an objective lens with a two-dimensional sensor and gives an estimate of the local slope at the aperture position. Then the wave front is reconstructed by processing of the slope data. The device is basically a programmable Hartmann wave-front sensor. Compared with a microlens Shack–Hartmann wave-front sensor, its much longer focal length provides higher resolution, although real-time operation is lost. A practical implementation of the new scanner with a liquid-crystal television as the programmable aperture is presented.

© 1999 Optical Society of America

OCIS Codes
(010.7350) Atmospheric and oceanic optics : Wave-front sensing
(120.5050) Instrumentation, measurement, and metrology : Phase measurement
(230.6120) Optical devices : Spatial light modulators

Vincent Laude, Ségolène Olivier, Carine Dirson, and Jean-Pierre Huignard, "Hartmann wave-front scanner," Opt. Lett. 24, 1796-1798 (1999)

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