Influence of the least-squares phase on optical vortices in strongly scintillated beams

Journal Article · Wed Jul 15 00:00:00 EDT 2009 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.80.013824· OSTI ID:21313342

Mingzhou, Chen; Roux, Filippus S ^[1]

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1. Applied Optics, School of Physics, National University of Ireland-Galway, Galway (Ireland)

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, we 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.

• OSTI ID: 21313342
• Journal Information: Physical Review. A, Vol. 80, Issue 1; Other Information: DOI: 10.1103/PhysRevA.80.013824; (c) 2009 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
APPROXIMATIONS
BEAMS
BOUND STATE
COMPUTERIZED SIMULATION
CORRECTIONS
EQUILIBRIUM
FLUCTUATIONS
FUNCTIONS
LASERS
LEAST SQUARE FIT
OPTICS
PLASMA
SCINTILLATIONS
VORTICES