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Proceedings Paper

Digital holography wavefront sensing in the pupil-plane recording geometry for distributed-volume atmospheric aberrations
Author(s): Matthias T. Banet; Mark F. Spencer; Robert A. Raynor; Dan K. Marker
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Paper Abstract

Digital holography in the pupil-plane recording geometry shows promise as a wavefront sensor for use in adaptive-optics systems. Because current wavefront sensors suffer from decreased performance in the presence of turbulence and thermal blooming, there is a need for a more robust wavefront sensor in such distributed-volume atmospheric conditions. Digital holography fulfills this roll by accurately estimating the wrapped phase of the complex optical field after propagation through the atmosphere to the pupil plane of an optical system. This paper examines wave-optics simulations of spherical-wave propagation through both turbulence and thermal blooming; it also quantifies the performance of digital holography as a wavefront sensor by generating field-estimated Strehl ratios as a function of the number of pixels in the detector array, the Rytov number, and the Fried coherence diameter. Altogether the results indicate that digital holography wavefront sensing in the pupil-plane recording geometry is a valid and accurate method for estimating the wrapped phase of the complex optical field in the presence of distributed-volume atmospheric aberrations.

Paper Details

Date Published: 20 September 2016
PDF: 18 pages
Proc. SPIE 9982, Unconventional Imaging and Wavefront Sensing XII, 998208 (20 September 2016); doi: 10.1117/12.2235462
Show Author Affiliations
Matthias T. Banet, New Mexico Institute of Mining and Technology (United States)
Mark F. Spencer, Air Force Research Lab. (United States)
Air Force Institute of Technology (United States)
Robert A. Raynor, Air Force Research Lab. (United States)
Dan K. Marker, Air Force Research Lab. (United States)


Published in SPIE Proceedings Vol. 9982:
Unconventional Imaging and Wavefront Sensing XII
Jean J. Dolne; Thomas J. Karr; David C. Dayton, Editor(s)

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