Multi-plane photophoretic trapping of airborne particles with a multi-linear optical trap

Porfirev, A.; Fomchenkov, Sergey A.; Porfiriev, D. P.; Хонина, С. Н.; Карпеев, С. В.

doi:10.1016/j.ijleo.2022.170118

Cited by 8 publications

(5 citation statements)

References 39 publications

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“…It was previously shown that two forces act when a particle is captured by a laser beam [12,61,120]. One of them is the longitudinal component of the Poynting vector (scattering), due to which the particle moves forward along the direction of beam propagation [61].…”

Section: Formation Of Optical Traps Using Inverse Ring Gratingsmentioning

confidence: 99%

“…For the calculation, we will need the field near the particle, the particle parameters, and the environment, and we will need to calculate the Poynting vector and intensity gradient. However, it should be noted that formulas [12,61] with sufficient complexity would not clearly show the effect of the trap, as well as the influence on the destruction of the rest of the field.…”

Section: Formation Of Optical Traps Using Inverse Ring Gratingsmentioning

confidence: 99%

“…Currently, methods for capturing and manipulating various micro-objects are being actively studied [1][2][3][4][5][6][7][8][9][10][11][12][13][14], in particular, using optical tweezers (optical traps) [13][14][15][16][17][18]. The use of optical traps has been shown to trap proteins, viruses, and vesicles not only theoretically, but also experimentally [19][20][21][22][23].…”

Section: Introductionmentioning

confidence: 99%

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The Features of the Optical Traps Formation Using Silicon Ring Gratings with Variable Height

Savelyev

2023

Photonics

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Features of the diffraction of Gaussian beams and Laguerre–Gaussian modes on subwavelength optical 3D microstructures with variable relief heights are calculated and studied in this paper. Silicon subwavelength ring gratings and diffraction axicons were considered as such optical microstructures. The height of individual relief elements varied. The propagation of laser light through the proposed optical elements was simulated using the finite difference time domain (FDTD) method. It was shown that it is possible to select the height of individual relief rings of ring gratings in such a way that it is possible to reduce the size of the focal spot down to 0.36 λ, form an extended light segment (up to 5.79 λ), and form optical traps.

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Section: Formation Of Optical Traps Using Inverse Ring Gratingsmentioning

confidence: 99%

Section: Formation Of Optical Traps Using Inverse Ring Gratingsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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The Features of the Optical Traps Formation Using Silicon Ring Gratings with Variable Height

Savelyev

2023

Photonics

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“…Structured light beams [1][2][3][4][5] with phase and polarization singularity are demanded in many applications, including optical trapping and manipulation of micro-and nanoparticles [6][7][8][9][10][11] , optical information transmission [12][13][14][15][16][17][18][19] , laser structuring [20][21][22][23][24][25][26][27][28][29] , and others. Due to their special properties, the greatest attention of researchers is drawn to cylindrically polarized beams [30][31][32][33][34][35] , especially beams with radial and azimuthal polarization.…”

Section: Introductionmentioning

confidence: 99%

Refractive multi-conical elements for cylindrical vector beam generation

Algubili,

Degtyarev,

Karpeev

et al. 2023

Optical Technologies for Telecommunications 2022

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In this paper, it is proposed to use Brewster angle refraction on a conical surface to form an azimuthally polarized beam. After reflection from the conical interface of the two media, the azimuthally polarized beam is conically divergent. An azimuthally polarized beam has a vortical phase dependence. In order to collimate the output beam and make it plane-parallel, it is proposed to use one, two or three conical surfaces combined in one element. The outer surface is used to collimate the converted beam, which significantly distinguishes the proposed element from previously proposed approaches. We have named the refractive optical elements Volcone, Tetracone, and Tricone. The Volcone produces ring shape beam and the Tricone and Tetracone produce round shape beam. The polarization states of the rays when passing through the interface of the media, as well as polarization transformations using the proposed elements using our own developed ray tracing program taking into account polarization, are investigated. The description of the polarization state was carried out using Jones notation. The Volcone is fabricated by diamond turning, in which an internal conical cavity is made. The paper describes a method for calculating the path of beams through refractive conical elements, taking into account phase and polarization conversions. The Volcone is experimentally made of polymethyl methacrylate on a computer numerical control milling machine. The experiment with the Volcone demonstrates the effectiveness of the proposed element. We present Tricone geometry calculation for the following manufacturing.

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“…Structured laser beams with a complex distribution of intensity and phase make it possible to hold and move in space nano-and microsized captured objects. The use of structured light made it possible to form complex light traps and rotate micro-objects 34,35 , move them along specified complex three-dimensional trajectories 36,37 , and also implement the so-called tractor beams 38 .…”

Section: Introductionmentioning

confidence: 99%

Calculation of a diffraction-free beam with the given transverse intensity distribution using an iterative algorithm

Khorin,

Volotovsky

2023

Optical Technologies for Telecommunications 2022

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It is proposed to use an iterative algorithm based on a ring spectrum and a lens to calculate a diffraction-free beam with a given transverse intensity distribution. In this work, we calculated and studied diffractive optical elements (DOEs) that form some primitive non-diffraction distributions (for example, a square and a triangle, as well as more complex grayscale distributions). It is shown that the iterative algorithm is stagnating, i.e. the number of iterations is directly related to the root mean square error. The mean square deviation of the formed transverse intensity distribution from the given primitive does not exceed 0.006 for a triangle primitive, 0.015 for a square primitive, and 0.07 for a high-contrast halftone image.

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Multi-plane photophoretic trapping of airborne particles with a multi-linear optical trap

Cited by 8 publications

References 39 publications

The Features of the Optical Traps Formation Using Silicon Ring Gratings with Variable Height

The Features of the Optical Traps Formation Using Silicon Ring Gratings with Variable Height

Refractive multi-conical elements for cylindrical vector beam generation

Calculation of a diffraction-free beam with the given transverse intensity distribution using an iterative algorithm

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