Phase-diversity wave-front sensing with a distorted diffraction grating |
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| Authors: | Blanchard P M Fisher D J Woods S C Greenaway A H |
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| Affiliation: | Electronics Sector, Defence Evaluation and Research Agency, St Andrew's Road, Malvern, Worcestershire WR14 3PS, United Kingdom. |
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| Abstract: | 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. |
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