Tunable generation of Bessel beams with a fluidic axicon

Milne, Graham; Jeffries, Gavin D. M.; Chiu, Daniel T.

doi:10.1063/1.2952833

Cited by 68 publications

(45 citation statements)

References 15 publications

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“…In this domain, we have seen the generation of variable axicon elements in microfluidic environments enabling the generation of reconfigurable Bessel beams [38].…”

Section: Bessel and Mathieu Beam Generationmentioning

confidence: 99%

Light beats the spread: “non‐diffracting” beams

Mazilu¹,

Stevenson²,

Gunn‐Moore³

et al. 2010

Laser & Photonics Reviews

156

101

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Non-diffracting" beams do not spread as they propagate. This property is useful in many areas. Here, the theory, generation, properties, and applications of various "non-diffracting" beams, including the Bessel beam, Mathieu beam, and Airy beam is reviewed. Applications include imaging, micromanipulation, nonlinear optics, and optical transfection."Non-diffracting" finite energy Airy beam clearing a chamber of micro-particles.

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“…In this domain, we have seen the generation of variable axicon elements in microfluidic environments enabling the generation of reconfigurable Bessel beams [38].…”

Section: Bessel and Mathieu Beam Generationmentioning

confidence: 99%

Light beats the spread: “non‐diffracting” beams

Mazilu¹,

Stevenson²,

Gunn‐Moore³

et al. 2010

Laser & Photonics Reviews

156

101

View full text Add to dashboard Cite

show abstract

“…To treat the case of completely incoherent beams (e.g., from independent sources), we calculated the forces first from the individual fields E b and H b using Eqs. (11) and (12) and added up these individual force contributions to yield the total force on the particle.…”

Section: B Optical Forcesmentioning

confidence: 99%

“…Initially, BBs were mainly used to study particles in the condensed phase. [1][2][3][4][5][6][7][8][9][10][11][12] More recently, they have also been applied to the more challenging field of aerosol particle trapping and guiding in air. [13][14][15][16][17][18][19] A particular attraction of BBs in the aerosol field is the possibility to trap submicron-sized aerosol droplets, 15,18 which are assumed to play an important role in various atmospheric processes.…”

mentioning

confidence: 99%

Dynamics of submicron aerosol droplets in a robust optical trap formed by multiple Bessel beams

Thanopulos¹,

Luckhaus²,

Preston³

et al. 2014

Journal of Applied Physics

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In this paper, we model the three-dimensional escape dynamics of single submicron-sized aerosol droplets in optical multiple Bessel beam traps. Trapping in counter-propagating Bessel beams (CPBBs) is compared with a newly proposed quadruple Bessel beam (QBB) trap, which consists of two perpendicularly arranged CPBB traps. Calculations are performed for perfectly and imperfectly aligned traps. Mie-theory and finite-difference time-domain methods are used to calculate the optical forces. The droplet escape kinetics are obtained from the solution of the Langevin equation using a Verlet algorithm. Provided the traps are perfectly aligned, the calculations indicate very long lifetimes for droplets trapped either in the CPBB or in the QBB trap. However, minor misalignments that are hard to control experimentally already severely diminish the stability of the CPBB trap. By contrast, such minor misalignments hardly affect the extended droplet lifetimes in a QBB trap. The QBB trap is found to be a stable, robust optical trap, which should enable the experimental investigation of submicron droplets with radii down to 100 nm. Optical binding between two droplets and its potential role in preventing coagulation when loading a CPBB trap is briefly addressed.

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“…We designed and fabricated transducers that could generate a Bessel beam containing a region of a negative axial radiation force. 4 Though Bessel beams can be generated by an Axicon lens, 5 the fabrication of an Axicon lens for microparticle trapping can be challenging due to the steep lens angle required. Thus, we fabricated both an aluminum alloy Axicon lens and a multi-foci Fresnel lens employing an air-reflector 6 that has wide tolerance to the lens thickness unlike the stepped plate structure 7 and also has wide tolerance to manufacturing imprecision.…”

mentioning

confidence: 99%

Microparticle trapping in an ultrasonic Bessel beam

Choe

Kim

Shung

et al. 2011

Applied Physics Letters

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This paper describes an acoustic trap consisting of a multi-foci Fresnel lens on 127 μm thick lead zirconate titanate sheet. The multi-foci Fresnel lens was designed to have similar working mechanism to an Axicon lens and generates an acoustic Bessel beam, and has negative axial radiation force capable of trapping one or more microparticle(s). The fabricated acoustic tweezers trapped lipid particles ranging in diameter from 50 to 200 μm and microspheres ranging in diameter from 70 to 90 μm at a distance of 2 to 5 mm from the tweezers without any contact between the transducer and microparticles.

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Tunable generation of Bessel beams with a fluidic axicon

Cited by 68 publications

References 15 publications

Light beats the spread: “non‐diffracting” beams

Light beats the spread: “non‐diffracting” beams

Dynamics of submicron aerosol droplets in a robust optical trap formed by multiple Bessel beams

Microparticle trapping in an ultrasonic Bessel beam

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