Applications of femtosecond Bessel beams to laser ablation

Courvoisier, F.; Zhang, Jie; Bhuyan, M. K.; Jacquot, Maxime; Dudley, John M.

doi:10.1007/s00339-012-7201-2

Cited by 101 publications

(52 citation statements)

References 25 publications

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“…In filamentation experiments, the new degrees of control offered by these beams with regard to the number and disposition of plasma channels may open new possibilities in short-range applications such as material laser ablation, wave guide writing, and in long-range applications such as filamentation guiding of weak waves in the atmosphere [42][43][44][45][46]. M.A.P.…”

Section: Discussionmentioning

confidence: 99%

Stationary and stable light-beam propagation in Kerr media with nonlinear absorption with controllable dissipation patterns

2017

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We report on the stationary and robust propagation of light beams with rather arbitrary and controllable intensity and dissipation transverse patterns in self-focusing Kerr media with nonlinear absorption. When nonlinear absorption is due to multi-photon ionization at high beam powers in transparent media such as glasses or air, these beams can generate multiple plasma channels with tailored geometries. Their nature and spatial characteristics are discussed in detail, as well as the laws determining their spontaneous formation from coherent superpositions of Bessel beams of different amplitudes and topological charges.

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Section: Discussionmentioning

confidence: 99%

Stationary and stable light-beam propagation in Kerr media with nonlinear absorption with controllable dissipation patterns

2017

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“…In many applications it is desirable to shape a beam or pulse of light so that it has specific properties along the optical axis. In particular, for applications in microscopic imaging [1], optical tweezers [2], laser micro-machining [3], dressing of optical filaments [4], filament formation [5] and long-range laser ablation [6,7], to name a few, it is important to have a well controlled beam with a nearly uniform intensity along the optical axis. However, due to their wave nature localized packets of light will broaden spatially through diffraction.…”

Section: Physical Description and Motivation Of The Problemmentioning

confidence: 99%

Optical beam shaping and diffraction free waves: A variational approach

Gemmer

Venkataramani

Durfee

et al. 2014

Physica D: Nonlinear Phenomena

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We investigate the problem of shaping radially symmetric annular beams into desired intensity patterns along the optical axis. Within the Fresnel approximation, we show that this problem can be expressed in a variational form equivalent to the one arising in phase retrieval. Using the uncertainty principle we prove various rigorous lower bounds on the functional; these lower bounds estimate the L 2 error for the beam shaping problem in terms of the design parameters. We also use the method of stationary phase to construct a natural ansatz for a minimizer in the short wavelength limit. We illustrate the implications of our results by applying the method of stationary phase coupled with the GerchbergSaxton algorithm to beam shaping problems arising in the remote delivery of beams and pulses.

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“…Bessel-beams have also been considered as interesting tools for the fabrication of photonic-crystal structures [16]. In this context, the characteristic dimensions of the fabricated channels or holes are critical.…”

Section: Introductionmentioning

confidence: 99%

Truncated Gaussian-Bessel beams for short-pulse processing of small-aspect-ratio micro-channels in dielectrics

Liu¹,

Li²,

Sikora³

et al. 2019

Opt. Express

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In order to control the length of micro-channels ablated at the surface of dielectrics, we use annular filtering apertures for tailoring the depth of focus of micrometric Gaussian-Bessel beams. We identify experimentally and numerically the appropriate beam truncation that promotes a smooth axial distribution of intensity with a small elongation, suitable for processing micro-channels of small aspect ratio. Single-shot channel fabrication is demonstrated on the front surface of a fused silica sample, with sub-micron diameter, highquality opening, and depth of few micrometers, using 1 ps low-energy (< 0.45 µJ) pulse. Finally, we realize 10 × 10 matrices of densely packed channels with aspect ratio ~5 and a spatial period down to 1.5 μm, as a prospective demonstration of direct laser fabrication of 2D photonic-crystal structures.

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Applications of femtosecond Bessel beams to laser ablation

Cited by 101 publications

References 25 publications

Stationary and stable light-beam propagation in Kerr media with nonlinear absorption with controllable dissipation patterns

Stationary and stable light-beam propagation in Kerr media with nonlinear absorption with controllable dissipation patterns

Optical beam shaping and diffraction free waves: A variational approach

Truncated Gaussian-Bessel beams for short-pulse processing of small-aspect-ratio micro-channels in dielectrics

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