A Bessel beam optical tweezers for manipulating superparamagneticbeads

2021 ◽  
Author(s):  
Ulisses Andrade ◽  
Aloísio Garcia ◽  
Marcio Rocha
Keyword(s):  
Optical Tweezers ◽  
Bessel Beam

scholarly journals Generating Bessel-Gaussian Beams with Controlled Axial Intensity Distribution

2020 ◽  
Vol 10 (21) ◽  
pp. 7911
Author(s):  
Nikita Stsepuro ◽  
Pavel Nosov ◽  
Maxim Galkin ◽  
George Krasin ◽  
Michael Kovalev ◽  
...  
Keyword(s):  
Optical Tweezers ◽  
Field Intensity ◽  
Optical System ◽  
Bessel Beam ◽  
Experimental Studies ◽  
Gaussian Beams ◽  
Gaussian Laser Beam ◽  
Axial Field ◽  
Power Radiation ◽  
High Power Radiation

This paper investigated the diffraction of a Gaussian laser beam on a binary mask and a refractive axicon. The principles of the formation of a zero-order Bessel beam with sharp drops of the axial field intensity edges were discussed. A laser optical system based on an axicon for the formation of a Bessel beam with quasi-uniform distribution of axial field intensity was proposed. In the laser optical system, the influence of the axicon apex did not affect the output beam. The results of theoretical and experimental studies are presented. It is expected that the research results will have practical application in optical tweezers, imaging systems, as well as laser technologies using high-power radiation.

scholarly journals High-efficiency Bessel beam array generation by Huygens metasurfaces

Nanophotonics ◽  
2019 ◽  
Vol 8 (6) ◽  
pp. 1079-1085 ◽  
Author(s):  
Zemeng Lin ◽  
Xiaowei Li ◽  
Ruizhe Zhao ◽  
Xu Song ◽  
Yongtian Wang ◽  
...  
Keyword(s):  
Optical Tweezers ◽  
High Efficiency ◽  
Bessel Beam ◽  
Numerical Aperture ◽  
Spatial Light Modulators ◽  
Total Efficiency ◽  
Self Healing ◽  
Bessel Beams ◽  
Beam Array ◽  
Low Efficiency

AbstractBessel beams have attracted considerable interest because of their unique non-diffractive, self-healing characteristics. Different approaches have been proposed to generate Bessel beams, such as using axicons, diffractive optical elements, composite holograms, or spatial light modulators. However, these approaches have suffered from limited numerical aperture, low efficiency, polarization-dependent properties, etc. Here, by utilizing dielectric Huygens metasurfaces as ultrathin, compact platforms by integrating the functionalities of Dammann gratings and axicons, we successfully demonstrate multiple Bessel beam generation with polarization-independent property. The number of two-dimensional arrays can be controlled flexibly, which can enhance information capacity with a total efficiency that can reach 66.36%. This method can have various applications, such as parallel laser fabrication, efficient optical tweezers, and optical communication.

Defining the trapping limits of holographical optical tweezers

2004 ◽  
Vol 51 (3) ◽  
pp. 409-414 ◽  
Author(s):  
P. Jordan ◽  
J. Leach ◽  
M. J. Padgett ◽  
J. Cooper ◽  
G. Sinclair
Keyword(s):  
Optical Tweezers

Electromagnetic-matter interactions and devices

2017 ◽  
Author(s):  
Sandip Tiwari
Keyword(s):  
Optical Tweezers ◽  
Quantum Cascade Lasers ◽  
Accelerator Physics ◽  
X Ray ◽  
Quantum Cascade ◽  
Inorganic Systems ◽  
Charge Cloud ◽  
Atomic Distance ◽  
Extinction Length ◽  
Cascade Lasers

This chapter explores electromagnetic-matter interactions from photon to extinction length scales, i.e., nanometer of X-ray and above. Starting with Casimir-Polder effect to understand interactions of metals and dielectrics at near-atomic distance scale, it stretches to larger wavelengths to explore optomechanics and its ability for energy exchange and signal transduction between PHz and GHz. This range is explored with near-quantum sensitivity limits. The chapter also develops the understanding phononic bandgaps, and for photons, it explores the use of energetic coupling for useful devices such as optical tweezers, confocal microscopes and atomic clocks. It also explores miniature accelerators as a frontier area in accelerator physics. Plasmonics—the electromagnetic interaction with electron charge cloud—is explored for propagating and confined conditions together with the approaches’ possible uses. Optoelectronic energy conversion is analyzed in organic and inorganic systems, with their underlying interaction physics through solar cells and its thermodynamic limit, and quantum cascade lasers.

scholarly journals Protocol to measure the membrane tension and bending modulus of cells using optical tweezers and scanning electron microscopy

2021 ◽  
Vol 2 (1) ◽  
pp. 100283
Author(s):  
Pedro Pompeu ◽  
Pedro S. Lourenço ◽  
Diney S. Ether ◽  
Juliana Soares ◽  
Jefte Farias ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Optical Tweezers ◽  
Membrane Tension ◽  
Bending Modulus ◽  
Scanning Electron

scholarly journals Photonic nanojet generated by a spheroidal particle illuminated by a vector Bessel beam

2021 ◽  
pp. 100106
Author(s):  
Yongjie Jia ◽  
Renxian Li ◽  
Wenze Zhuang ◽  
Jiarui Liang
Keyword(s):  
Bessel Beam ◽  
Spheroidal Particle ◽  
Photonic Nanojet

Optimizing Optical Tweezers Experiments for Magnetic Resonance Sensing with Nanodiamonds

ACS Photonics ◽  
2021 ◽  
Author(s):  
Lachlan W. Russell ◽  
Eloise C. Dossetor ◽  
Alexander A. Wood ◽  
David A. Simpson ◽  
Peter J. Reece
Keyword(s):  
Magnetic Resonance ◽  
Optical Tweezers

scholarly journals Nano‐Optical Tweezers: Methods and Applications for Trapping Single Molecules and Nanoparticles

ChemPhysChem ◽  
2021 ◽  
Vol 22 (14) ◽  
pp. 1408-1408
Author(s):  
Joshua D. Kolbow ◽  
Nathan C. Lindquist ◽  
Christopher T. Ertsgaard ◽  
Daehan Yoo ◽  
Sang‐Hyun Oh
Keyword(s):  
Optical Tweezers ◽  
Single Molecules
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