Ultrafast Bessel beams: advanced tools for laser materials processing

Stoian, Razvan; Bhuyan, M. K.; Zhang, Guodong; Cheng, Guanghua; Meyer, Rémi; Courvoisier, F.

doi:10.1515/aot-2018-0009

Cited by 91 publications

(57 citation statements)

References 87 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…When encountering an obstacle, the beam can reconstruct itself using the rings reservoir. It thus exhibits high robustness during propagation [ 6 , 7 ]. These features make Bessel beams attractive in the field of laser machining.…”

Section: Introductionmentioning

confidence: 99%

Reconstructing of Embedded High-Aspect-Ratio Nano-Voids Generated by Ultrafast Laser Bessel Beams

et al. 2020

Self Cite

View full text Add to dashboard Cite

Ultrafast non-diffractive Bessel laser beams provide strong light confinement and show robust advantages for fabricating high-aspect-ratio nanoscale structures inside transparent materials. They take the form of nanoscale voids with typical diameters well below the wavelength and aspect ratio of more than 1000. Delivering 3D morphologies of such nanoscale voids is an important issue to evaluate the result for fabrication. However, the characterization of such laser-induced structures is a difficult task. Here, an accurate and time-saving tomography-like methodology is proposed and adopted for reconstructing the morphology of high-aspect-ratio nano-holes. The technique allows an accurate assertion of laser parameters and position on nano-structured features. The reconstructed configuration reveals that nanoholes morphologies have a close relationship with energy distribution in the focal region. It suggests that the configuration of micro-explosion can be controlled by laser energy deposition in the process of laser-matter interaction down to the nanoscale.

show abstract

Section: Introductionmentioning

confidence: 99%

Reconstructing of Embedded High-Aspect-Ratio Nano-Voids Generated by Ultrafast Laser Bessel Beams

et al. 2020

Self Cite

View full text Add to dashboard Cite

show abstract

“…Due to their intriguing properties, Bessel beams have attracted intensive research interests. A plethora of applications has been proposed to operate over a broad spectral domain spanning from optical to microwave frequencies, including laser machining, [3,4] microscopy, [5,6] microwave drilling, [7] and radars. [8,9] Traditionally, Bessel beams can be generated by axicons, [10,11] holograms, [12] leaky waveguide modes, [13,14] and subwavelength apertures.…”

Section: Flexible Manipulation Of Bessel-like Beams With a Reconfigurmentioning

confidence: 99%

Flexible Manipulation of Bessel‐Like Beams with a Reconfigurable Metasurface

Feng

Ratni

et al. 2020

Advanced Optical Materials

View full text Add to dashboard Cite

Bessel beams have attracted considerable interest due to their intriguing nondiffraction and self‐healing properties. Such beam can be generated by conventional devices that are more or less subjected to issues of low efficiency, complex manufacturing, and bulky size. Here, an electronically engineered reflective metasurface is designed to generate and flexibly manipulate Bessel‐like beams over a broad frequency range in the microwave regime. Due to the dynamic resonance feature of the metasurface, the phase profile can be easily adjusted for different applications. The nondiffraction feature is illustrated by analyzing several configurations with different nondiffraction area of the Bessel‐like beam, while the self‐healing property is verified by placing a metallic obstacle in the propagation path. The dynamic control of functional frequency and propagation direction of Bessel‐like beams is realized by controlling the external DC bias voltage applied to the metasurface. Experimental validation of the aforementioned features is perfectly consistent with numerical simulations. Owing to the flexible control, broad bandwidth, and high‐efficiency properties, the proposed Bessel‐like beam generator suggests potential applications in microwave domain such as focusing, wireless power transmission, and other complex demands such as beam steering.

show abstract

“…To grasp the essential features of non-diffractive beams in material processing, we will briefly point out several cases of using Bessel beams for high impact applications [40,[56][57][58][59][60][61][62], that are finding now their way into industrial-grade processes. These were recently reviewed in Ref [63].…”

Section: Technological Applications Of Non-diffractive Ultrafast Bessmentioning

confidence: 99%

High-resolution material structuring using ultrafast laser non-diffractive beams

Stoian

Bhuyan

Rudenko

et al. 2019

Advances in Physics: X

Self Cite

View full text Add to dashboard Cite

Scales in the 100 nm range represent a generic cornerstone for laser material processing, enabling novel size-dependent functions on surfaces and in the bulk and thus a new range of technological applications. On these scales, the processed material acquires optical, transport or contact properties that do not only rely on local effects on singular topographic features but involve increasingly collective behaviors. Rapid access to sub-100 nm features with intense coherent light represents nevertheless a challenge in laser structuring in view of the optical diffraction limit. Ultrafast non-diffractive beams with controllable time envelopes can overcome this limit and achieve super-resolved processing, a prerequisite for the next generation of flexible and precise material processing tools. They show a remarkable capacity of structuring transparent materials with high degree of accuracy and exceptional aspect ratio. This capacity relies on triggering fast hydrodynamic and material fracture effects with characteristic spatial scales in the nm range. Reviewing the present achievements and technical potential, we discuss from a dynamic viewpoint the physical mechanisms enabling structural features beyond diffraction limit achieved using ultrafast Bessel beams and indicate applications of high technical relevance. ARTICLE HISTORY

show abstract

Ultrafast Bessel beams: advanced tools for laser materials processing

Cited by 91 publications

References 87 publications

Reconstructing of Embedded High-Aspect-Ratio Nano-Voids Generated by Ultrafast Laser Bessel Beams

Reconstructing of Embedded High-Aspect-Ratio Nano-Voids Generated by Ultrafast Laser Bessel Beams

Flexible Manipulation of Bessel‐Like Beams with a Reconfigurable Metasurface

High-resolution material structuring using ultrafast laser non-diffractive beams

Contact Info

Product

Resources

About