A two deformable mirror concept for correcting scintillation effects in laser beam projection
Document Type
Conference Proceeding
Publication Date
12-1-1998
Abstract
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 using 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 to a conventional phase-only correction system.
Publication Title
Proceedings of SPIE - The International Society for Optical Engineering
Recommended Citation
Roggemann, M.,
&
Lee, D.
(1998).
A two deformable mirror concept for correcting scintillation effects in laser beam projection.
Proceedings of SPIE - The International Society for Optical Engineering,
3381, 66-75.
http://doi.org/10.1117/12.323926
Retrieved from: https://digitalcommons.mtu.edu/michigantech-p/12097