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Applied Optics

Applied Optics


  • Vol. 37, Iss. 21 — Jul. 20, 1998
  • pp: 4577–4585

Two-deformable-mirror concept for correcting scintillation effects in laser beam projection through the turbulent atmosphere

Michael C. Roggemann and David J. Lee  »View Author Affiliations

Applied Optics, Vol. 37, Issue 21, pp. 4577-4585 (1998)

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A two-deformable-mirror concept for correcting scintillation 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, similar to kinoforms used in laser beam shaping. 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 with a technique based on the Fienup phase-retrieval algorithm. Simulations of propagation through a single turbulent layer sufficiently distant from the beacon observation and laser beam transmission aperture to cause scintillation shows that, for an ideal deformable-mirror system, this field-conjugation approach improves the on-axis field amplitude by a factor of approximately 1.4 to 1.5 compared with a conventional phase-only correction system.

© 1998 Optical Society of America

OCIS Codes
(010.1290) Atmospheric and oceanic optics : Atmospheric optics
(010.7060) Atmospheric and oceanic optics : Turbulence
(230.4040) Optical devices : Mirrors

Original Manuscript: August 19, 1997
Revised Manuscript: October 14, 1997
Published: July 20, 1998

Michael C. Roggemann and David J. Lee, "Two-deformable-mirror concept for correcting scintillation effects in laser beam projection through the turbulent atmosphere," Appl. Opt. 37, 4577-4585 (1998)

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