Journal ArticleDOI
Generation of an array of optical bottle beams using a superposition of Bessel beams.
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TLDR
It is shown that the hollow circular beams (optical bottle beams) are suited for trapping transparent spherical micro-objects matched in radius with the beam radius, which means they are suitable for trapping opaque spherical microparticles in a double optical bottle.Abstract:
A procedure for computing the phase transmission function of diffractive optical elements intended to form an array of optical bottle beams is proposed and studied. The procedure is based on a superposition of Bessel beams. We show that the hollow circular beams (optical bottle beams) are suited for trapping transparent spherical micro-objects matched in radius with the beam radius. A series of experiments on trapping transparent micro-objects in the optical bottle arrays is described. Results of an experiment on trapping opaque spherical microparticles in a double optical bottle are reported.read more
Citations
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Journal ArticleDOI
3D transformations of light fields in the focal region implemented by diffractive axicons
TL;DR: In this article, three-dimensional transformations of light fields were investigated, including such characteristics as intensity distribution and polarisation state, in the focal region at tight focusing and in the paraxial regime due to the lens apodisation by a diffraction axicon with different structures (linear, binary, spiral axicons).
Journal ArticleDOI
Dark-hollow optical beams with a controllable shape for optical trapping in air
TL;DR: This work proposes and studies a technique for generating dark-hollow optical beams (DHOBs) with a controllable cross-sectional intensity distribution and demonstrates photophoresis-based optical trapping and manipulation of absorbing air-borne nanoclusters with such beams.
Trapping aerosols with optical bottle arrays generated through a superposition of multiple Airy beams
TL;DR: In this article, the authors demonstrate the generation of an array of optical bottle beams by employing multiple self-accelerating Airy beams, all with inward acceleration directed towards the center.
Journal ArticleDOI
Generating superimposed Bessel beams with a volume holographic axicon.
TL;DR: This method allows tunability of the SBB period through a simple rearrangement of optical elements and demonstrates that periodicity is dependent on δ.
Journal ArticleDOI
Optical trapping and manipulation of light-absorbing particles by means of a Hermite–Gaussian laser beam
TL;DR: In this paper, the authors describe simultaneous optical trapping and displacement of several nonspherical light absorbing microparticles in air by means of a focused Hermite-Gaussian laser beam (laser mode TEM10, radiation wavelength 457nm).
References
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Journal ArticleDOI
Observation of a single-beam gradient force optical trap for dielectric particles
TL;DR: Optical trapping of dielectric particles by a single-beam gradient force trap was demonstrated for the first reported time, confirming the concept of negative light pressure due to the gradient force.
Journal ArticleDOI
Diffraction-free beams.
TL;DR: The first experimental investigation of nondiffracting beams, with beam spots as small as a few wavelengths, can exist and propagate in free space, is reported.
Journal ArticleDOI
Trapping and guiding microparticles with morphing autofocusing Airy beams
Peng Zhang,Jai Prakash,Ze Zhang,Matthew S. Mills,Nikolaos K. Efremidis,Demetrios N. Christodoulides,Zhigang Chen +6 more
TL;DR: It is experimentally demonstrated, for the first time, that such Airy beams morph into nondiffracting Bessel beams in their far-field.
Journal ArticleDOI
Generation of a beam with a dark focus surrounded by regions of higher intensity: the optical bottle beam
Jochen Arlt,Miles J. Padgett +1 more
TL;DR: A computer-generated hologram is used to form an optical beam with a localized intensity null at its focus that will have applications in the optical trapping of macroscopic objects or atoms; hence the term optical bottle beam.
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Generation of a beam with a dark focus surrounded by regions of higher intensity: the optical bottle beam
Jochen Arlt,Miles J. Padgett +1 more