Closed-loop wave-front correction using phase diversity

Rick Lee Kendrick; Raymond M. Bell Jr.; Alan L. Duncan; Gordon D. Love; D. Scott Acton

doi:10.1117/12.324439

28 August 1998 Closed-loop wave-front correction using phase diversity

Rick Lee Kendrick, Raymond M. Bell Jr., Alan L. Duncan, Gordon D. Love, D. Scott Acton

Proceedings Volume 3356, Space Telescopes and Instruments V; (1998) https://doi.org/10.1117/12.324439
Event: Astronomical Telescopes and Instrumentation, 1998, Kona, HI, United States

Abstract

Closed loop wave front correction of low order Zernike polynomials has been demonstrated using a phase diversity wavefront sensor. The Lockheed-Martin Advanced Technology Center phase diversity brassboard was used to demonstrate low bandwidth correction of aberrations consisting of the Zernike polynomials describing focus, coma and spherical. The method of Lofdahl-Scharmer is used to estimate and correct fixed aberrations in an optical system. The General Regression Neural Network method is used to estimate slowly varying aberrations in the same optical system. Closed loop experimental results from these tests are presented.

Citation Download Citation

Rick Lee Kendrick, Raymond M. Bell Jr., Alan L. Duncan, Gordon D. Love, and D. Scott Acton "Closed-loop wave-front correction using phase diversity", Proc. SPIE 3356, Space Telescopes and Instruments V, (28 August 1998); https://doi.org/10.1117/12.324439

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