skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

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

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, 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.

Authors:
;  [1]
  1. Applied Optics, School of Physics, National University of Ireland-Galway, Galway (Ireland)
Publication Date:
OSTI Identifier:
21313342
Resource Type:
Journal Article
Journal Name:
Physical Review. A
Additional Journal Information:
Journal Volume: 80; Journal Issue: 1; Other Information: DOI: 10.1103/PhysRevA.80.013824; (c) 2009 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1050-2947
Country of Publication:
United States
Language:
English
Subject:
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

Citation Formats

Mingzhou, Chen, Roux, Filippus S, and National Laser Centre, CSIR, P.O. Box 395, Pretoria 0001. Influence of the least-squares phase on optical vortices in strongly scintillated beams. United States: N. p., 2009. Web. doi:10.1103/PHYSREVA.80.013824.
Mingzhou, Chen, Roux, Filippus S, & National Laser Centre, CSIR, P.O. Box 395, Pretoria 0001. Influence of the least-squares phase on optical vortices in strongly scintillated beams. United States. https://doi.org/10.1103/PHYSREVA.80.013824
Mingzhou, Chen, Roux, Filippus S, and National Laser Centre, CSIR, P.O. Box 395, Pretoria 0001. 2009. "Influence of the least-squares phase on optical vortices in strongly scintillated beams". United States. https://doi.org/10.1103/PHYSREVA.80.013824.
@article{osti_21313342,
title = {Influence of the least-squares phase on optical vortices in strongly scintillated beams},
author = {Mingzhou, Chen and Roux, Filippus S and National Laser Centre, CSIR, P.O. Box 395, Pretoria 0001},
abstractNote = {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.},
doi = {10.1103/PHYSREVA.80.013824},
url = {https://www.osti.gov/biblio/21313342}, journal = {Physical Review. A},
issn = {1050-2947},
number = 1,
volume = 80,
place = {United States},
year = {Wed Jul 15 00:00:00 EDT 2009},
month = {Wed Jul 15 00:00:00 EDT 2009}
}