We describe a novel wave-front sensor comprising a distorted diffraction grating, simple optics, and a single camera. A noniterative phase-diversity algorithm is used for wave-front reconstruction. The sensor concept and practical implementation are described in detail, and performance is validated against different Zernike modes and a representative atmospheric phase map.
© 2000 Optical Society of America
[Optical Society of America ]
(010.1080) Atmospheric and oceanic optics : Active or adaptive optics
(010.7350) Atmospheric and oceanic optics : Wave-front sensing
(050.1950) Diffraction and gratings : Diffraction gratings
(110.4190) Imaging systems : Multiple imaging
Paul M. Blanchard, David J. Fisher, Simon C. Woods, and Alan H. Greenaway, "Phase-Diversity Wave-Front Sensing with a Distorted Diffraction Grating," Appl. Opt. 39, 6649-6655 (2000)