Micro-step localization using double charge optical vortex interferometer

Masajada, Jan; Leniec, Monika; Drobczyński, Sławomir; Thienpont, Hugo; Kress, Bernard C.

doi:10.1364/oe.17.016144

Cited by 32 publications

(27 citation statements)

References 25 publications

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“…The diffraction of beams with OV is so specific that it forms a base for simple, fast and accurate methods of the OV detection and diagnostics [13][14][15][16] and can be used for subwavelength measurements. 17,18 However, despite a number of useful applications, the detailed pattern of the energy redistribution in the diffracted OV beams has never been analyzed. In the present paper, we make an attempt to address this problem and show that it offers a suitable and insightful model for inspecting the internal structure of the OVs and understanding their physical nature.…”

Section: Introductionmentioning

confidence: 99%

Transverse energy redistribution upon edge diffraction of a paraxial laser beam with optical vortex

Bekshaev

Mohammed

2013

Eleventh International Conference on Correlation Optics

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We present the results of the numerical investigation of the transverse profile evolution for a beam obtained by the edge diffraction of a circular Laguerre-Gaussian mode. It is shown that the energy penetrates into the geometric shadow region asymmetrically, which testifies for the transverse energy circulation in the incident beam. The intensity profile shows the "overall" rotation in agreement with the energy circulation handedness. The phase profile of the diffracted beam is characterized by the system of singularities (optical vortices) that migrate over the beam cross section and participate in topological reactions of emergence and/or annihilation. In the far field, the beam profile structure is simplified and becomes symmetric with respect to the axis orthogonal to the screen edge. No matter which part of the Laguerre-Gaussian beam is stopped by the screen, the far-field profile contains the optical vortex of the same sense as the incident one.

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Section: Introductionmentioning

confidence: 99%

Transverse energy redistribution upon edge diffraction of a paraxial laser beam with optical vortex

Bekshaev

Mohammed

2013

Eleventh International Conference on Correlation Optics

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“…Since the OV may be identified by means of interference with reference beam this solution can be considered as a kind of vortex interference microscopy. This new solution has been presented in [73][74][75][76][77][78][79]. in the azimuthal direction, circular fringe interferograms are useful.…”

Section: Vortex Lattices From Spherical Wavesmentioning

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 first system (named SUPHIM-SUperresolution PHase Image Microscope) was proposed and tested by V. Tychynsky [1,2]. Although the solution proposed by Tychynsky was not successful [3], the phase singularities are still believed to constitute a potential solution for new imaging microscopic systems [4][5][6][7][8][9][10][11][12][13][14][15][16][17][18] (not all of which were focused on superresolution [7,8,13,14]). Presently, the most successful superresolution system using optical vortices is the STED microscope [9], where the vortex beam is used as a depletion beam.…”

Section: Introductionmentioning

confidence: 99%

Analytical Model of the Optical Vortex Scanning Microscope with a Simple Phase Object

2017

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An analytical model of an optical vortex microscope, in which a simple phase object was inserted into the illuminating beam, is presented. In this microscope, the focused vortex beam interacts with an object and transmits the corresponding information to the detection plane. It was shown that the beam at the detection plane can be separated analytically into two parts: a non-disturbed vortex part and an object beam part. The intensity of the non-disturbed part spreads out over the center; hence, the small disturbance introduced by the object can be detected at the image center. A first procedure for recovering information about the object from this set-up was proposed. The theory was verified experimentally.

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Micro-step localization using double charge optical vortex interferometer

Cited by 32 publications

References 25 publications

Transverse energy redistribution upon edge diffraction of a paraxial laser beam with optical vortex

Transverse energy redistribution upon edge diffraction of a paraxial laser beam with optical vortex

Interferometry with Vortices

Analytical Model of the Optical Vortex Scanning Microscope with a Simple Phase Object

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