Generation of spirally polarized propagation-invariant beam using fiber microaxicon

Philip, Geo M.; Viswanathan, Nirmal K.

doi:10.1364/ol.36.003906

Cited by 18 publications

(5 citation statements)

References 15 publications

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“…The radial phase retardation provided by the axicon produces BB with no on-axis intensity modulation along the beam propagation. However, it is not possible to manufacture a perfect axicon with a sharp edge at its apex [109][110][111][112][113]. For a comparative understanding of the defect axicon with reference to the ideal axicon, both types of axicon shapes in the longitudinal cross-section are given in figure 19.…”

Section: Axiconmentioning

confidence: 99%

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A conceptual review on Bessel beams

Rao

2024

Phys. Scr.

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Over the past 36 years much research has been carried out on Bessel beams (BBs) owing to their peculiar properties, viz non-diffraction behavior, self-healing nature, possession of well-defined orbital angular momentum with helical wave-front, and realization of smallest central lobe. Here, we provide a detailed review on BBs from their inception to recent developments. We outline the fundamental concepts involved in the origin of the BB. The theoretical foundation of these beams was described and then their experimental realization through different techniques was explored. We provide an elaborate discussion on the different kinds of structured modes produced by the BB. The advantages and challenges that come with the generation and applications of the BB are discussed with examples. This review provides reference material for readers who wish to work with non-diffracting modes and promotes the application of such modes in interdisciplinary research areas.

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Section: Axiconmentioning

confidence: 99%

“…Hence, these modes are called propagationinvariant polarization modes. Multiple techniques were efficiently generated these vector modes, viz: Pancharatnam-Berry phase optical elements [294], axicon tipped fibers [111,297], metasurfaces [181,298], and SLM [299,300].…”

Section: Vector Bessel Beamsmentioning

confidence: 99%

A conceptual review on Bessel beams

Rao

2024

Phys. Scr.

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“…In [27,36,37], the conditions under which the polarization invariance is observed in the propagation of partially coherent electromagnetic beams are analyzed. It is known that the spirally polarized beams [29,30,39,40] remain invariant in polarization during propagation. Note that the radial and azimuthal polarizations are the particular cases of the spirally polarized beams.…”

Section: Introductionmentioning

confidence: 99%

Depolarization of Vector Light Beams on Propagation in Free Space

Petrov¹

2022

Photonics

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Nonparaxial propagation of the vector vortex light beams in free space was investigated theoretically. Propagation-induced polarization changes in vector light beams with different spatial intensity distributions were analyzed. It is shown that the hybrid vector Bessel modes with polarization-OAM (orbital angular momentum) entanglement are the exact solutions of the vector Helmholtz equation. Decomposition of arbitrary vector beams in the initial plane z = 0 into these polarization-invariant beams with phase and polarization singularities was used to analyze the evolution of the polarization of light within the framework of the 2 × 2 coherency matrix formalism. It is shown that the 2D degree of polarization decreases with distance if the incident vector beam is not the modal solution. The close relationship of the degree of polarization with the quantum-mechanical purity parameter is emphasized.

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“…On the other hand, in a variety of applications, such as polarimetry, lidar, microscopy, manipulation of particles, etc., NUTP beams with invariant transverse polarization distributions can be convenient. The most used NUTP beams that remain invariant in polarization during propagation are the spirally polarized beams [2,6,32,34], especially in the particular cases of radial and azimuthal polarization.…”

Section: Introductionmentioning

confidence: 99%

Mueller Matrix Polarimetry with Invariant Polarization Pattern Beams

et al. 2021

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A wide class of nonuniformly totally polarized beams that preserve their transverse polarization pattern during paraxial propagation was studied. Beams of this type are of interest, in particular, in polarimetric techniques that use a single input beam for the determination of the Mueller matrix of a homogeneous sample. In these cases, in fact, it is possible to test the sample response to several polarization states at once. The propagation invariance of the transverse polarization pattern is an interesting feature for beams used in these techniques, because the polarization state of the output beam can be detected at any transverse plane after the sample, without the use of any imaging/magnifying optical system. Furthermore, exploiting the great variety of the beams of this class, the ones that better fit specific experimental constrains can be chosen. In particular, the class also includes beams that present all possible polarization states across their transverse section (the full Poincaré beams (FPB)). The use of the latter has recently been proposed to increase the accuracy of the recovered Mueller matrix elements. Examples of FPBs with propagation-invariant polarization profiles and its use in polarimetry are discussed in detail. The requirement of invariance of the polarization pattern can be limited to the propagation in the far field. In such a case, less restrictive conditions are derived, and a wider class of beams is found.

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Generation of spirally polarized propagation-invariant beam using fiber microaxicon

Cited by 18 publications

References 15 publications

A conceptual review on Bessel beams

A conceptual review on Bessel beams

Depolarization of Vector Light Beams on Propagation in Free Space

Mueller Matrix Polarimetry with Invariant Polarization Pattern Beams

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