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Applied Optics

Applied Optics


  • Vol. 42, Iss. 19 — Jul. 1, 2003
  • pp: 3737–3741

Sensing a wave front by use of a diffraction grating

Nazario Bautista-Elivar, Carlos Ignacio Robledo-Sánchez, Alberto Cordero-Dávila, and Alejandro Cornejo-Rodríguez  »View Author Affiliations

Applied Optics, Vol. 42, Issue 19, pp. 3737-3741 (2003)

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A method is presented to sense the wave front at the exit of an optical surface. This method uses a set of diffracted rays generated when a He-Ne laser impinges on a rectangular diffraction grating. The grating was placed near the curvature center of the surface to be tested. After they are reflected in the test surface, the diffracted rays have the information of the slopes of the wave front, like in the Hartmann test. The Hartmann pattern was registered near the curvature center and captured with a CCD camera. The slopes for each ray are measured from the experimental pattern, and they are compared with the ideal ones simulated in a computer. The evaluation was carried out by use of Seidel polynomials to obtain the information of the aberrations of a mirror 53 cm in diameter.

© 2003 Optical Society of America

OCIS Codes
(050.1950) Diffraction and gratings : Diffraction gratings
(220.4840) Optical design and fabrication : Testing

Original Manuscript: October 1, 2002
Revised Manuscript: February 19, 2003
Published: July 1, 2003

Nazario Bautista-Elivar, Carlos Ignacio Robledo-Sánchez, Alberto Cordero-Dávila, and Alejandro Cornejo-Rodríguez, "Sensing a wave front by use of a diffraction grating," Appl. Opt. 42, 3737-3741 (2003)

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