Determining topological charge based on an improved Fizeau interferometer

Cui, Shengwei; Xu, Bin; Luo, Saiyu; Xu, Huiying; Luo, Zhengqian; Pu, Jixiong; Chávez-Cerda, Sabino

doi:10.1364/oe.27.012774

Cited by 49 publications

(18 citation statements)

References 28 publications

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“…Later, many diffractionbased methods were reported [80,81,263,[319][320][321][322][323]. Some interference-based methods for vortex detection include phase shifting [190,324], modified Mach-Zehnder [325,326], and Fizeau interferometer [327]. Another interference method, based on lateral shear interferometry, was reported [33,79] in 2008.…”

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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“…Several previous works have observed the twist effects of the interference pattern mainly based on the visual inspection [16,22,23]. Here we quantitatively extract the value of the parameter φ max from the interference fringe and plot the variation of φ max along the radial direction.…”

Section: Radial Twist Of the Interference Fringementioning

confidence: 99%

“…The rotating interference pattern has broad applications in manipulation of cold atoms, such as generating artificial gauge electromagnetic field [19], exploring quantum Hall physics [20], rotating single atoms [21], and so on. Previous works have observed the rotation and twist effects of the interference pattern mainly based on the visual inspection [14,15,16,22,23]. The knowledge of the detailed structure of the optical interference pattern is required to understand the interaction between matter and superimposed vortex beams.…”

Section: Introductionmentioning

confidence: 99%

Characterizing the temporal rotation and radial twist of the interference pattern of vortex beam

Nie,

Kong,

Gao

et al. 2022

Preprint

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We experimentally and theoretically characterize the temporal rotation and radial twist of the interference pattern of vortex beam with its conjugate copy. To quantitatively study the temporal rotation and radial twist, we controllably modify the conjugate beam with a frequency or wavefront curvature difference using a movable Mach-Zehnder interferometer. The effects of the physical parameters (i.e., the topological charge, frequency difference and wavefront curvature difference of the vortex beams) on the temporal rotation as well as radial twist are systematically explored. We further measure two parameters, the rotation velocity Ω and twist coefficient α, respectively, to characterize the degree of the temporal rotation and radial twist of the interference pattern. The theory of the interference model on vortex beams have good agreements with the experimental results. This work is favorite to study the detailed structure of the interference pattern and manipulate matter with superimposed vortex beams.

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“…The OAM of the light is generally characterized by detecting the magnitude and sign of the l, and many methods have been proposed, such as interference methods [7][8][9][10] and diffraction methods [11][12][13]. Most of the interference methods require a reference beam, and diffraction methods usually require special optical element and strict beam alignment.…”

Section: Introductionmentioning

confidence: 99%