The new method of topological charge determination of optical vortices in the interference field of the optical vortex interferometer

Frączek, Ewa; Frączek, Wojciech; Masajada, Jan

doi:10.1016/j.ijleo.2005.11.007

Cited by 16 publications

(6 citation statements)

References 2 publications

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“…Singular beams found many applications. ey are useful in optical meteorology for wavefront tilt measurement [356,357], wavefront reconstruction [41,358], phase unwrapping [165][166][167], vortex sign [359,360], and vortex charge determination [361,362] by optical vortex interferometer. Optical vortices are also used for collimation testing [42] and in spiral interferometry [44,363,364] in which the peak and valley can be detected unambiguously.…”

Section: Literature Survey Of Phase and Polarization Singularitiesmentioning

confidence: 99%

Phase Singularities to Polarization Singularities

Ruchi

Senthilkumaran

Pal

2020

International Journal of Optics

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Polarization singularities are superpositions of orbital angular momentum (OAM) states in orthogonal circular polarization basis. The intrinsic OAM of light beams arises due to the helical wavefronts of phase singularities. In phase singularities, circulating phase gradients and, in polarization singularities, circulating ϕ12 Stokes phase gradients are present. At the phase and polarization singularities, undefined quantities are the phase and ϕ12 Stokes phase, respectively. Conversion of circulating phase gradient into circulating Stokes phase gradient reveals the connection between phase (scalar) and polarization (vector) singularities. We demonstrate this by theoretically and experimentally generating polarization singularities using phase singularities. Furthermore, the relation between scalar fields and Stokes fields and the singularities in each of them is discussed. This paper is written as a tutorial-cum-review-type article keeping in mind the beginners and researchers in other areas, yet many of the concepts are given novel explanations by adopting different approaches from the available literature on this subject.

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Section: Literature Survey Of Phase and Polarization Singularitiesmentioning

confidence: 99%

Phase Singularities to Polarization Singularities

Ruchi

Senthilkumaran

Pal

2020

International Journal of Optics

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“…However, if the sign of the topological charge must be know two methods are in used. Both methods require additional measurement steps as described in papers 12,16,17 . These steps are easy and can be made before the main measurements.…”

Section: Discussionmentioning

confidence: 99%

<title>The optical vortex interferometer AD 2006</title>

Masajada

2007

SPIE Proceedings

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The optical vortex interferometer (OVI) is based on the regular net of optical vortices, which are generated by the interference of three plane waves. In this paper the current state of the OVI is described. The paper starts with an outline of the OVI theory. In the next step the three different versions of the optical body of OVI are shortly described. The possible enhancements of the instrument are also discussed Next the methods for interfergoram analysis are presented and the possible applications of the OVI are listed and shortly discussed.

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“…There are many methods available to identify optical vortex charge for a single beam [50][51][52][53]. The methods for determining the charge sign distribution at vortex lattice are described in [54][55][56]. These methods can be used before measurement (as system calibration methods), and as such do not change the results of the measurements.…”

Section: Optical Vortex Latticementioning

confidence: 99%

Interferometry with Vortices

Senthilkumaran

Masajada

Sato

2012

International Journal of Optics

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Interference of optical beams with optical vortices is often encountered in singular optics. Since interferometry makes the phase observable by intensity measurement, it brings out a host of applications and helps to understand the optical vortex. In this article we present an optical vortex interferometer that can be used in optical testing and has the potential to increase the accuracy of measurements. In an optical vortex interferometer (OVI), a lattice of vortices is formed, and the movement of the cores of these vortices is tracked when one of the interfering beams is deformed. Instead of multiple vortices in an OVI, an isolated single vortex also finds applications in optical testing. Finally, singularity in scalar and vector fields is presented, and the relation between them is illustrated by the superposition of these beams.

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The new method of topological charge determination of optical vortices in the interference field of the optical vortex interferometer

Cited by 16 publications

References 2 publications

Phase Singularities to Polarization Singularities

Phase Singularities to Polarization Singularities

<title>The optical vortex interferometer AD 2006</title>

Interferometry with Vortices

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