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Numerical correction of optical vortex using a wrapped phase map analysis algorithm |
Optics Letters, Vol. 36, Issue 7, pp. 1251-1253 (2011)
http://dx.doi.org/10.1364/OL.36.001251
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Abstract
We demonstrate experimentally a technique for the numerical correction of an optical vortex with a unitary topological charge. A developed algorithm based on the axial behavior of a reconstructed wavefront is used in the detection of the optical vortex. Optimizations of the number of axial phase maps and the window size used in the algorithm yield the precise coordinates of the vortex eye. The obtained coordinates and vortex handedness are used in designing a proper filter, facilitating numerical correction of the vortex phase map. The developed algorithm can be applied to absolute phase and phase difference maps obtained through any reconstruction method.
© 2011 Optical Society of America
OCIS Codes
(090.1000) Holography : Aberration compensation
(100.5070) Image processing : Phase retrieval
(120.2650) Instrumentation, measurement, and metrology : Fringe analysis
(090.1995) Holography : Digital holography
(050.4865) Diffraction and gratings : Optical vortices
(070.7345) Fourier optics and signal processing : Wave propagation
ToC Category:
Holography
History
Original Manuscript: February 28, 2011
Manuscript Accepted: March 4, 2011
Published: March 30, 2011
Citation
Anne Margarette S. Maallo and Percival F. Almoro, "Numerical correction of optical vortex using a wrapped phase map analysis algorithm," Opt. Lett. 36, 1251-1253 (2011)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-36-7-1251
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