Trapping two types of particles using a focused partially coherent circular edge dislocations beam

Zhang, Hanghang; Li, Jinhong; Cheng, Ke; Duan, Mei-Ling; Feng, Zhifang

doi:10.1016/j.optlastec.2017.06.025

Cited by 13 publications

(8 citation statements)

References 50 publications

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“…In addition, the range of acceptable radii for the stable capture of the low index of refraction particles was determined. In comparison with the previous work, the focused partially coherent circular edge dislocations beam can be used to trap the high index of refraction particles at the focus F, and simultaneously to capture the low index of refraction particles at a dark ring [21], whereas the focused GSM vortex beam can trap the low index of refraction particles to the z-axis, thus, the trapping range of the same kind of particles is different obviously for different beams. The results obtained in this paper provide valuable information for trapping and manipulating Rayleigh particles using GSM vortex beams, which may be applied in biotechnology, nanotechnology and other fields.…”

Section: Discussionmentioning

confidence: 98%

“…(1) reduces to the initial field of a fundamental Gaussian beam and for m ≠ 0 and n = 0, Eq. (1) degenerates to the initial field distribution of a vortex beam [21].…”

Section: Theoretical Modelmentioning

confidence: 99%

“…Recently, FAN et al numerically investigated the trapping effect of tightly focused radially polarized power-exponent-phase vortex beam at the focal plane [20]. We have analyzed the radiation force of focused partially coherent circular edge dislocation beams and focused partially coherent modified Bessel-Gaussian (MBG) beams exerted on two types of particles, and it has been shown that these particles can be simultaneously stably trapped at different positions [21,22]. In addition, the radiation force of the hollow Gaussian beams [23,24], Airy beams [25], radially polarized beams [26,27], and other beams [28] on the microparticles have also been explored.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Optical trapping of the low index of refraction particles by focused vortex beams and two face-to-face focused beams

Duan¹,

Zhang²,

Li³

2020

Optica Applicata

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Using the extended Huygens–Fresnel principle and Rayleigh scattering theory, optical trapping of the low index of refraction particles using a focused Gaussian Schell-model (GSM) non-vortex beam, a focused GSM vortex beam, and two face-to-face focused GSM vortex beams have been studied. The results demonstrate that the focused GSM non-vortex beam cannot capture the low index of refraction particles, however, the focused GSM vortex beam can be a two-dimensional trap of particles in the z-axis, and the transverse gradient force Fgrad,x and the trapping equilibrium region increase as the topological charge m increases. As the focal length f or the refractive index of particles np decreases, the radiation forces increase and the trapping ability also enhances. To trap the low index particles in three-dimensional space, we adopt that the two face-to-face focused GSM vortex beams can be used to construct an optical potential well. The transverse gradient force of two face-to-face focused GSM vortex beams is twice that of a single GSM vortex beam. The limit of the radius for the low index of refraction particles that were stably captured has also been determined. The obtained results provide valuable information for trapping and manipulating the low index of refraction particles using GSM vortex beams, which may be applied in micromanipulation, biotechnology, nanotechnology and so on.

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Section: Discussionmentioning

confidence: 98%

“…(1) reduces to the initial field of a fundamental Gaussian beam and for m ≠ 0 and n = 0, Eq. (1) degenerates to the initial field distribution of a vortex beam [21].…”

Section: Theoretical Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Optical trapping of the low index of refraction particles by focused vortex beams and two face-to-face focused beams

Duan¹,

Zhang²,

Li³

2020

Optica Applicata

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“…Previous results suggest that a focused pseudo-Schell model beam could be used for trapping dielectric nanoparticles in a similar way to other kinds of partially coherent beams [5,6,[34][35][36][37]. An advantage of the pseudo-Schell model beams is the sharpening of the intensity profile and the high peak that is reached after the source plane (see Figures 5 and 6), which could increase the gradient force exerted on a dielectric particle.…”

Section: Trapping Dielectric Nanoparticle With Pseudo-schell Beamsmentioning

confidence: 90%

Besinc Pseudo-Schell Model Sources with Circular Coherence

et al. 2019

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Partially coherent sources with non-conventional coherence properties present unusual behaviors during propagation, which have potential application in fields like optical trapping and microscopy. Recently, partially coherent sources exhibiting circular coherence have been introduced and experimentally realized. Among them, the so-called pseudo Schell-model sources present coherence properties that depend only on the difference between the radial coordinates of two points. Here, the intensity and coherence properties of the fields radiated from pseudo Schell-model sources with a degree of coherence of the besinc type are analyzed in detail. A sharpening of the intensity profile is found for the propagated beam by appropriately selecting the coherence parameters. As a possible application, the trapping of different types of dielectric nanoparticles with this kind of beam is described.

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“…The introduction of NUTP beams has been followed by their use in numerous application fields, such as optical tweezers, particle optical manipulation, material processing, microscopy, focus shaping, surface plasmon sensing, polarimetry, etc. [10,12,13,25,44,[52][53][54][55][56][57][58][59][60][61][62][63][64][65][66][67][68][69][70].…”

Section: Introductionmentioning

confidence: 99%

Synthesis and characterization of non-uniformly totally polarized light beams: tutorial

Piquero¹,

Martı́nez-Herrero²,

Sande³

et al. 2020

J. Opt. Soc. Am. A

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Polarization of a light beam is traditionally studied under the hypothesis that the state of polarization is uniform across the transverse section of the beam. In such a case, if the paraxial approximation is also assumed, the propagation of the beam reduces to a scalar problem. Over the last few decades, light beams with spatially variant states of polarization have attracted great attention, due mainly to their potential use in applications such as optical trapping, laser machining, nanoscale imaging, polarimetry, etc. In this tutorial, an introductory treatment of nonuniformly totally polarized beams is given. Besides a brief review of some useful parameters for characterizing the polarization distribution of such beams across transverse planes, from both local and global points of view, several methods for generating them are described. It is expected that this tutorial will serve newcomers as a starting point for further studies on the subject.

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Trapping two types of particles using a focused partially coherent circular edge dislocations beam

Cited by 13 publications

References 50 publications

Optical trapping of the low index of refraction particles by focused vortex beams and two face-to-face focused beams

Optical trapping of the low index of refraction particles by focused vortex beams and two face-to-face focused beams

Besinc Pseudo-Schell Model Sources with Circular Coherence

Synthesis and characterization of non-uniformly totally polarized light beams: tutorial

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