Filamentation in Kerr media from pulsed Bessel beams

Polesana, P.; Michel, F. C.; Couairon, Arnaud; Faccio, Daniele; Trapani, P. Di

doi:10.1103/physreva.77.043814

Cited by 142 publications

(141 citation statements)

References 58 publications

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“…The central channel becomes larger with the fluence clamped at the level of 0.6 J/cm 2 corresponding to an intensity of 2.2 TW/cm 2 . These values are typical for filamentary propagation [13]. The pulse energy is therefore deposited in this larger area with a diameter of 15 µm [ Fig.…”

Section: Energy Depositionmentioning

confidence: 95%

“…A crucial point when it comes to applications is that these non-diffractive beams have to keep their structure in the presence of the highly nonlinear propagation effects, so that energy is deposited along their whole length [13]. In order to produce extending Bessel beams, hundreds of microns long, conical angles of 10 • <θ B <20 • are employed.…”

Section: Introductionmentioning

confidence: 99%

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Improved laser glass cutting by spatio-temporal control of energy deposition using bursts of femtosecond pulses

Mishchik¹,

Beuton²,

Caulier³

et al. 2017

Opt. Express

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Abstract:We demonstrate the advantage of combining non-diffractive beam shapes and femtosecond bursts for volume laser processing of transparent materials. By re-distribution of the single laser pulse energy into several sub-pulses with 25 ns time delay, the energy deposition in the material can be enhanced significantly. Our combined experimental and theoretical analysis shows that in burst-mode detrimental defocusing by the laser generated plasma is reduced, and the non-diffractive beam shape prevails. At the same time, heat accumulation during the interaction with the burst leads to temperatures high enough to induce material melting and even in-volume cracks. In an exemplary case study, we demonstrate that the formation of these cracks can be controlled to allow high-speed and high-quality glass cutting.

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Section: Energy Depositionmentioning

confidence: 95%

Section: Introductionmentioning

confidence: 99%

Improved laser glass cutting by spatio-temporal control of energy deposition using bursts of femtosecond pulses

Mishchik¹,

Beuton²,

Caulier³

et al. 2017

Opt. Express

View full text Add to dashboard Cite

show abstract

“…Indeed, long cylindrical micro-channels with high aspect ratios [8,9] up to 1200 have been demonstrated with singleshot ultrafast pulsed Bessel beams. The previous study with Bessel beam of variable pulse duration [10] also suggested that ps pulses are more beneficial for high efficiency energy deposition and could avoid temporal dynamics effects [11,12] which can compromise the stationarity of the Bessel beam propagation. Bhuyan et al [13] demonstrated that rear-side ablation under water immersion is a good strategy to facilitate debris evacuation and for obtaining taper-free micro/nano channel fabrication.…”

Section: Introductionmentioning

confidence: 99%

Front-surface fabrication of moderate aspect ratio micro-channels in fused silica by single picosecond Gaussian–Bessel laser pulse

et al. 2018

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Single-shot Gaussian-Bessel laser beams of 1 ps pulse duration and of ~ 0.9 μm core size and ~ 60 μm depth of focus are used for drilling micro-channels on front side of fused silica in ambient condition. Channels ablated at different pulse energies are fully characterized by AFM and post-processing polishing procedures. We identify experimental energy conditions (typically 1.5 µJ) suitable to fabricate non-tapered channels with mean diameter of ~ 1.2 µm and length of ~ 40 μm while maintaining an utmost quality of the front opening of the channels. In addition, by further applying accurate post-polishing procedure, channels with high surface quality and moderate aspect ratio down to a few units are accessible, which would find interest in the surface micro-structuring of materials, with perspective of further scalability to meta-material specifications.

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“…The self-reconstruction properties of filaments and their extension were also explained in terms of the energy reservoir surrounding filaments. 16 Nonlinear dynamics of pulsed Bessel beams [17][18][19] and possible applications [20][21][22] were also investigated.…”

Section: Introductionmentioning

confidence: 99%

Extension of filament propagation in water with Bessel-Gaussian beams

Kaya

Sayrac

et al. 2016

AIP Advances

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We experimentally studied intense femtosecond pulse filamentation and propagation in water for Bessel-Gaussian beams with different numbers of radial modal lobes. The transverse modes of the incident Bessel-Gaussian beam were created from a Gaussian beam of a Ti:sapphire laser system by using computer generated hologram techniques. We found that filament propagation length increased with increasing number of lobes under the conditions of the same peak intensity, pulse duration, and the size of the central peak of the incident beam, suggesting that the radial modal lobes may serve as an energy reservoir for the filaments formed by the central intensity peak.

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Filamentation in Kerr media from pulsed Bessel beams

Cited by 142 publications

References 58 publications

Improved laser glass cutting by spatio-temporal control of energy deposition using bursts of femtosecond pulses

Improved laser glass cutting by spatio-temporal control of energy deposition using bursts of femtosecond pulses

Front-surface fabrication of moderate aspect ratio micro-channels in fused silica by single picosecond Gaussian–Bessel laser pulse

Extension of filament propagation in water with Bessel-Gaussian beams

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