Numerical correction of optical vortex using a wrapped phase map analysis algorithm

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

Numerical correction of aberrations via phase retrieval with speckle illumination

Percival F. Almoro, Phanindra N. Gundu, and Steen G. Hanson
Opt. Lett. 34(4) 521-523 (2009)

Wavefront sensing using speckles with fringe compensation

Percival F. Almoro and Steen G. Hanson
Opt. Express 16(11) 7608-7618 (2008)

Optical Vectorial Vortex Coronagraphs using Liquid Crystal Polymers: theory, manufacturing and laboratory demonstration

D. Mawet, E. Serabyn, K. Liewer, Ch. Hanot, S. McEldowney, D. Shemo, and N. O’Brien
Opt. Express 17(3) 1902-1918 (2009)

Wavefront correction of spatial light modulators using an optical vortex image

A. Jesacher, A. Schwaighofer, S. Fürhapter, C. Maurer, S. Bernet, and M. Ritsch-Marte
Opt. Express 15(9) 5801-5808 (2007)

Comparative analysis on some filters for wrapped phase maps

Qian Kemao, Le Tran Hoai Nam, Lin Feng, and Seah Hock Soon
Appl. Opt. 46(30) 7412-7418 (2007)