Correcting for amplitude effects in laser-beam propagation through the turbulent atmosphere using a two-deformable-mirror technique

Michael C. Roggemann; David J. Lee

doi:10.1117/12.279041

17 October 1997 Correcting for amplitude effects in laser beam propagation through the turbulent atmosphere using a two-deformable-mirror technique

Michael C. Roggemann, David J. Lee

Author Affiliations +

Proceedings Volume 3126, Adaptive Optics and Applications; (1997) https://doi.org/10.1117/12.279041
Event: Optical Science, Engineering and Instrumentation '97, 1997, San Diego, CA, United States

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.

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Michael C. Roggemann and David J. Lee "Correcting for amplitude effects in laser beam propagation through the turbulent atmosphere using a two-deformable-mirror technique", Proc. SPIE 3126, Adaptive Optics and Applications, (17 October 1997); https://doi.org/10.1117/12.279041

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