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Please use this identifier to cite or link to this item: http://hdl.handle.net/10204/3557

Title: Influence of the least-squares phase on optical vortices in strongly scintillated beams
Authors: Chen, M
Roux, FS
Keywords: Optical vortices
Scintillated beams
Adaptive optics systems
Optical vortex plasma model
Least-squares phase
Issue Date: Jun-2009
Publisher: American Physical Society
Citation: Chen, M and Roux, FS. 2009. Influence of the least-squares phase on optical vortices in strongly scintillated beams. Physical Review A, Vol. 80(1), pp 1-6
Abstract: The optical vortices that exist in strongly scintillated beams make it difficult for conventional adaptive optics systems to remove the phase distortions. When the least-squares reconstructed phase is removed, the vortices still remain. However, researchers found that the removal of the least-squares phase induces a portion of the vortices to be annihilated during subsequent propagation, causing a reduction in the total number of vortices. This can be understood in terms of the restoration of equilibrium between explicit vortices, which are visible in the phase function, and vortex bound states, which are somehow encoded in the continuous phase fluctuations. Numerical simulations are provided to show that the total number of optical vortices in a strongly scintillated beam can be reduced significantly after a few steps of least-squares phase corrections.
Description: Copyright: 2009 American Physical Society
URI: http://link.aps.org/doi/10.1103/PhysRevA.80.013824
http://hdl.handle.net/10204/3557
ISSN: 1050-2947
Appears in Collections:Laser physics and technology
General science, engineering & technology

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