Spatial Optical Traps Based on Multibeam Interference

Shostka, N. V.; Sokolenko, Bogdan V.; Karakchieva, O. S.; Shostka, V. I.

doi:10.1134/s1063785020110280

Cited by 3 publications

(1 citation statement)

References 13 publications

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“…The first attempts at spatial structuring of a large number of particles (to a few tens and hundreds) into an array with the specified configuration were based on the interference of several, e.g., three and five, beams [193,194] obtained by amplitude or wavefront division [195] and producing a quasiperiodic field pattern in the region of their superposition. Such an approach allowed improving the mechanisms of sorting particles of different sizes at the expense of changing the shape and position of the `optical lattice' [196,197]. To reduce the number of optical elements and to increase the resistance to mechanical perturbations, this method acquired a new development twist by using various diffraction gratings and amplitude masks.…”

Section: Multi-beam Trapsmentioning

confidence: 99%

Optical tweezers and manipulators. Modern concepts and future prospect

2022

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The review aims to generalize fundamental concepts that are necessary for understanding the mechanisms and principles of optical trapping in both liquid media and air. One of the objectives of the article is to familiarize a wide audience with the global experience and the prospects for developing the fundamental principles of the functioning of optical tweezers for various purposes. The paper describes in detail the design options of optical manipulators in terms of versatility and energy efficiency of their use in a wide range of modern practical purposes and tasks.

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Section: Multi-beam Trapsmentioning

confidence: 99%

Optical tweezers and manipulators. Modern concepts and future prospect

2022

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Determination of the refractive index profile and surface topography of optically smooth objects using interference of optical vortices

Sokolenko

Shostka

Poletaev

2021

J. Phys.: Conf. Ser.

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In this paper, we present the results of the propagational dynamics of vortex beams in the scope of their possible applications for interferometric non-contact robust and precision optical surface profilometry with nanoscale longitudinal resolution. The result of coaxial superposition of the reference plane wave with singly charged vortex beams represents a dynamically changing intensity distribution. The nature of this changes, namely, rotational effects of intensity zeros, allows to determine directly the optical path difference which is introduced by the surfaces and internal structure of test object. We have proposed the experimental setup for examination of reflecting and transmitting objects.

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