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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 17, Iss. 9 — Apr. 27, 2009
  • pp: 7186–7195

Calibration and testing with real turbulence of a pyramid sensor employing static modulation

Jeffrey LeDue, Laurent Jolissaint, Jean-Pierre Véran, and Colin Bradley  »View Author Affiliations

Optics Express, Vol. 17, Issue 9, pp. 7186-7195 (2009)

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The pyramid sensor (PS) is an interesting alternative to the Shack-Hartmann wavefront sensor (SH WFS) for astronomical Adaptive Optics (AO) because of its potential advantages in sensitivity and applicability to novel wavefront sensing schemes. The PS uses a pyramidal prism to perform a knife-edge test in two dimensions simultaneously and relies on modulating the position of the prism to increase the linear dynamic range. It has been suggested that this could also be accomplished by a static diffusing element. We test this idea and show that the diffuser produces a modulation effect. We compare the results of our PS to a SH WFS measuring spatial and temporal properties of real turbulence produced in the lab with a hot-air turbulence generator.

© 2009 Optical Society of America

OCIS Codes
(010.1080) Atmospheric and oceanic optics : Active or adaptive optics
(010.1330) Atmospheric and oceanic optics : Atmospheric turbulence
(010.7060) Atmospheric and oceanic optics : Turbulence
(010.7350) Atmospheric and oceanic optics : Wave-front sensing

ToC Category:
Atmospheric and Oceanic Optics

Original Manuscript: February 26, 2009
Revised Manuscript: April 11, 2009
Manuscript Accepted: April 13, 2009
Published: April 15, 2009

Jeffrey LeDue, Laurent Jolissaint, Jean-Pierre Véran, and Colin Bradley, "Calibration and testing with real turbulence of a pyramid sensor employing static modulation," Opt. Express 17, 7186-7195 (2009)

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