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Proceedings Paper

Correcting for amplitude effects in laser beam propagation through the turbulent atmosphere using a two-deformable-mirror technique
Author(s): Michael C. Roggemann; David J. Lee
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Paper Abstract

A two deformable mirror concept for correcting amplitude effects in laser beam projection through the turbulent atmosphere is presented. This system uses a deformable mirror and a Fourier transforming mirror to adjust the amplitude of the wave front in the telescope pupil. A second deformable mirror is used to correct the phase of the wave front before it leaves the aperture. The phase applied to the deformable mirror used for controlling the beam amplitude is obtained using a technique based on the Fienup phase retrieval algorithm. One dimensional simulation results are presented which indicate that the average on-axis energy is improved by 15% or more on average, and the 90% encircled energy radius can be reduced by up to 30% on average.

Paper Details

Date Published: 17 October 1997
PDF: 11 pages
Proc. SPIE 3126, Adaptive Optics and Applications, (17 October 1997); doi: 10.1117/12.279041
Show Author Affiliations
Michael C. Roggemann, Air Force Institute of Technology (United States)
David J. Lee, Air Force Institute of Technology (United States)


Published in SPIE Proceedings Vol. 3126:
Adaptive Optics and Applications
Robert K. Tyson; Robert Q. Fugate, Editor(s)

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