Application of Bessel beams to 2D microfabrication

Li, X.-F.; Winfield, Richard Dien; O’Brien, S.; Crean, G.M.

doi:10.1016/j.apsusc.2008.07.107

Cited by 23 publications

(4 citation statements)

References 10 publications

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“…This shaping results in a long and narrow focal line along the optical axis ("diffraction-free beam"), rather than a point as in the case of convex lenses. Such non-diffracting unique property makes them useful in applications like alignment and metrology [2,3], second harmonic generation [4], 2D micro-fabrication [5], waveguide writing [6], optical trapping [7,8], or optical coherence tomography [9,10] where the associated improved depth of field is an asset. To do so, the axicon deviates the incident collimated beam propagating along the z-axis with an angle 𝛽 determined, in paraxial approximation, by the opening angle (also called as base or wedge angle) 𝛼 of the cone and the refractive index 𝑛 of the employed material [11]:…”

Section: Introductionmentioning

confidence: 99%

High-fidelity glass micro-axicons fabricated by laser-assisted wet etching

Skora,

Gaiffe,

Bargiel

et al. 2021

Preprint

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We report on the fabrication of micro-axicons made of glass by laser-assisted wet etching (LAE) and laser polishing. The employed technique, relying on an efficient direct-writing process by femtosecond laser, allows revealing high fidelity profiles while etched in a heated potassium hydroxide (KOH) solution. The remaining surface roughness is then smoothened by carbon dioxide (CO 2 ) laser polishing. Such polishing is limited to the skin of the component so that the tip is only slightly rounded, with a radius of curvature of nearly 200 µm. It is then shown with 500 µm-diameter axicons that the quasi-Bessel beam is generated closely after the tip, and features a 5.3 µm diameter maintained over a propagation distance of almost 3.5 mm.

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Section: Introductionmentioning

confidence: 99%

High-fidelity glass micro-axicons fabricated by laser-assisted wet etching

Skora,

Gaiffe,

Bargiel

et al. 2021

Preprint

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show abstract

“…In spite of this limitation, the Bessel beam has a wide spectrum of applications. For example, manipulation and trapping of microparticles, atoms and biological cells [4][5][6][7][8], electron acceleration [9,10], laser ablation [11], microfabrication [12,13], velocity measurement [14] and imaging [15,16]. These items show that the interaction of Bessel beams with matter, especially other than perfectly conducting, is an important aspect of investigation.…”

Section: Introductionmentioning

confidence: 99%

Transmission of a Bessel beam through a circular aperture in an impedance screen

Umul

2014

Laser Phys. Lett.

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The scattering effect of a circular aperture, located in an impedance plane, on a Bessel beam is investigated by decomposing the scattered wave into two subcomponents, namely the geometrical optics and diffracted fields. The diffracted waves are investigated with the aid of the geometrical theory of diffraction. The detour parameter is evaluated and the existence zones of the geometrical optics fields are determined. The various aspects of the reflected and transmitted scattered waves, including the self healing of the beam, are studied numerically.

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“…It shows how two features are formed in the region behind the focus of the microscope objective. [7] The feature of interest in this study is the long Bessel beam. By controlling its formation, by selecting the apex angle of the axicon, high aspect ratio lines can be formed.…”

mentioning

confidence: 99%

Fabrication of 3D Templates Using a Large Depth of Focus Femtosecond Laser

Richard²,

O’Brien³

et al. 2009

Chinese Phys. Lett.

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We report the use of a large depth of focus Bessel beam in the fabrication of cell structures. Two axicon lenses are investigated in the formation of high aspect ratio line structures. A sol-gel resin, with good mechanical strength, is polymerised in a modified two-photon polymerisation system. Examples of different two-dimensional grids are presented to show that the lateral resolution can be maintained even in the rapid fabrication of high-sided structures.

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Application of Bessel beams to 2D microfabrication

Cited by 23 publications

References 10 publications

High-fidelity glass micro-axicons fabricated by laser-assisted wet etching

High-fidelity glass micro-axicons fabricated by laser-assisted wet etching

Transmission of a Bessel beam through a circular aperture in an impedance screen

Fabrication of 3D Templates Using a Large Depth of Focus Femtosecond Laser

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