Chen, MRoux, FS2009-08-282009-08-282009-06Chen, 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 1-61050-2947http://link.aps.org/doi/10.1103/PhysRevA.80.013824http://hdl.handle.net/10204/3557Copyright: 2009 American Physical SocietyThe 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.enOptical vorticesScintillated beamsAdaptive optics systemsOptical vortex plasma modelLeast-squares phaseArticleChen, M., & Roux, F. (2009). Influence of the least-squares phase on optical vortices in strongly scintillated beams. http://hdl.handle.net/10204/3557Chen, M, and FS Roux "Influence of the least-squares phase on optical vortices in strongly scintillated beams." (2009) http://hdl.handle.net/10204/3557Chen M, Roux F. Influence of the least-squares phase on optical vortices in strongly scintillated beams. 2009; http://hdl.handle.net/10204/3557.TY - Article AU - Chen, M AU - Roux, FS AB - 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. DA - 2009-06 DB - ResearchSpace DP - CSIR KW - Optical vortices KW - Scintillated beams KW - Adaptive optics systems KW - Optical vortex plasma model KW - Least-squares phase LK - https://researchspace.csir.co.za PY - 2009 SM - 1050-2947 T1 - Influence of the least-squares phase on optical vortices in strongly scintillated beams TI - Influence of the least-squares phase on optical vortices in strongly scintillated beams UR - http://hdl.handle.net/10204/3557 ER -