Ultrafast laser micro-and nano-processing with nondiffracting and curved beams: invited paper for the section: hot topics in ultrafast lasers

F Courvoisier, R Stoian, A Couairon - Optics & Laser Technology, 2016 - Elsevier
Ultrafast laser materials processing has undergone an important change with the
development of non-diffracting beams. These beams enable overcoming many of the …

Laser assisted fabrication of micro-lens array and characterization of their beam shaping property

IB Sohn, HK Choi, YC Noh, J Kim, MS Ahsan - Applied Surface Science, 2019 - Elsevier
This paper demonstrates the formation of high-fill-factor plano-convex cylindrical and dome-
type micro-lens arrays on fused silica glass surface using CO 2 laser assisted reshaping …

Single-shot ultrafast laser processing of high-aspect-ratio nanochannels using elliptical Bessel beams

R Meyer, M Jacquot, R Giust, J Safioui, L Rapp… - Optics letters, 2017 - opg.optica.org
Ultrafast lasers have revolutionized material processing, opening a wealth of new
applications in many areas of science. A recent technology that allows the cleaving of …

Extremely high-aspect-ratio ultrafast Bessel beam generation and stealth dicing of multi-millimeter thick glass

R Meyer, L Froehly, R Giust, J Del Hoyo… - Applied Physics …, 2019 - pubs.aip.org
We report on the development of an ultrafast beam shaper capable of generating Bessel
beams of high cone angle that maintain a high intensity hot spot with subwavelength …

High speed cleaving of crystals with ultrafast Bessel beams

L Rapp, R Meyer, L Furfaro, C Billet, R Giust… - Optics express, 2017 - opg.optica.org
We develop a novel concept for ultra-high speed cleaving of crystalline materials with
femtosecond lasers. Using Bessel beams in single shot, fracture planes can be induced …

Strength of ultra-thin glass cut by internal scribing using a femtosecond Bessel beam

H Shin, D Kim - Optics & Laser Technology, 2020 - Elsevier
We analyzed a process to cut thin glass by internal scribing and mechanical breaking using
a femtosecond laser Bessel beam. The effect of process parameters on the edge strength of …

High-aspect-ratio, high-quality microdrilling by electron density control using a femtosecond laser Bessel beam

Q Xie, X Li, L Jiang, B Xia, X Yan, W Zhao, Y Lu - Applied Physics A, 2016 - Springer
We propose an efficient microdrilling method of high-aspect-ratio, high-quality microholes in
polymethyl methacrylate by controlling localized transient spatial electron density using …

[HTML][HTML] Ultrafast Laser Processing for High-Aspect-Ratio Structures

M Qin, X Zhao, H Fan, R Leng, Y Yu, A Li, B Gao - Nanomaterials, 2024 - mdpi.com
Over the past few decades, remarkable breakthroughs and progress have been achieved in
ultrafast laser processing technology. Notably, the remarkable high-aspect-ratio processing …

Nonstandard light for ultrafast laser microstructuring and nanostructuring

F Courvoisier - Ultrafast Laser Nanostructuring: The Pursuit of Extreme …, 2023 - Springer
Ultrashort laser pulses have revolutionized laser-matter interaction because they can
deposit energy at extremely small scales. High-speed and controlled nanostructuring has …

Ionization behavior and dynamics of picosecond laser filamentation in sapphire

L Ji, T Yan, R Ma - Opto-Electronic Advances, 2019 - oejournal.org
Currently, laser-induced structural modifications in optical materials have been an active
field of research. In this paper, we reported structural modifications in the bulk of sapphire …