Results 31 to 40 of about 4,177,848 (171)

Dynamics of laser-induced tunable focusing in silicon

Scientific Reports, 2022
We report here on focusing of a probe IR (λ = 1.55 μm) laser beam in silicon. The focusing is done by a second pump laser beam, at λ = 0.775 μm and 30 ps pulse width, with a donut shape that is launched collinearly and simultaneously (with some delay ...
Nadav Shabairou, Maor Tiferet, Zeev Zalevsky, Moshe Sinvani   +3 more
doaj   +1 more source

System technology for dynamic beam shaping

, 2022
S.930-939, Paper 2003Since the power of continuous wave laser sources have reached one kilowatt, beam shaping is an important topic in the sector of laser material processing. The high intensity allows the increase of process speed, but the extreme local
Hauptmann, Jan, Dittrich, Dirk, Beyer, Eckhard, Senger, Frank, Herwig, Patrick, Wetzig, Andreas, Hofmann, Ulrich   +6 more
core   +1 more source

Basic Properties of High-Dynamic Beam Shaping with Coherent Combining of High-Power Laser Beams for Materials Processing

Journal of Manufacturing and Materials Processing
Lasers with average powers of several kilowatts have become an important tool for industrial applications. Temporal and spatial beam shaping was demonstrated to improve existing and enable novel applications.
Rudolf Weber, Jonas Wagner, Alexander Peter, Christian Hagenlocher, Ami Spira, Benayahu Urbach, Eyal Shekel, Yaniv Vidne   +7 more
doaj   +1 more source

A Comprehensive Review on Static Laser Beam Shaping: Solution for Welding Challenges in E-Vehicle Battery Manufacturing

Applied Sciences
The increasing demand for reliable and high-performance electric vehicle (EV) batteries requires precise and defect-free welding of battery components.
Zia Uddin, Erica Liverani, Alessandro Ascari, Alessandro Fortunato   +3 more
doaj   +1 more source

Inverse design of perimeter-controlled InAs-assisted metasurface for two-dimensional dynamic beam steering

Nanophotonics, 2022
The current commercially viable light detection and ranging systems demand continuous, full-scene, and dynamic two-dimensional point scanning, while featuring large aperture size to ensure long distance operation.
Sabri Raana, Mosallaei Hossein
doaj   +1 more source

Experimental and numerical investigation on the dynamic shear failure mechanism of sandstone using short beam compression specimen

Journal of Rock Mechanics and Geotechnical Engineering, 2023
In this study, a novel testing method is proposed to characterize the dynamic shear property and failure mechanism of rocks by introducing the short beam compression (SBC) specimen into the split Hopkinson pressure bar (SHPB) system.
Zelin Yan, Feng Dai, Yi Liu
doaj   +1 more source

Dynamic shaping of orbital-angular-momentum beams for information encoding

Optics Express, 2018
Shaping complex fields with a digital micromirror device (DMD) has attracted much attention recently due to its potential application in optical communication and microscopy. In this paper, we present an optimized Lee method to achieve dynamic shaping of orbital-angular-momentum (OAM) beams using a binary DMD. An error diffusion algorithm is introduced
Xinyao, Hu, Qian, Zhao, Panpan, Yu, Xuanling, Li, Ziqiang, Wang, Yinmei, Li, Lei, Gong   +6 more
openaire   +2 more sources

Dynamic spatial beam shaping for ultrafast laser processing: a review

Opto-Electronic Science
This review examines the state-of-the-art in spatial manipulation of ultrafast laser processing using dynamic light modulators, with a particular focus on liquid crystal-based systems.
Cyril Mauclair, Bahia Najih, Vincent Comte, Florent Bourquard, Martin Delaigue   +4 more
doaj   +1 more source

Exposure Time Variation Method Using DMD for Microstereolithography

Journal of Advanced Mechanical Design, Systems, and Manufacturing, 2012
In stereolithography, parts are fabricated by curing photopolymeric resins with light. The application of stereolithography can now be extended to a very small scale. The process, called microstereolithography, can fabricate parts on a microscale without
Ho-chan KIM, Hae-Ryong YOON, In-Hwan LEE, Tae-Jo KO   +3 more
doaj   +1 more source

Electrically tunable metasurface by using InAs in a metal–insulator–metal configuration

Nanophotonics, 2022
The ability of modulating optical properties at a lateral subwavelength scale is of crucial importance due to its potential applications for wide-angle holographic displays, optical communications, and interferometric sensors.
Park Junghyun, Kim Seong Jun, Sorger Volker J., Kim Soo Jin   +3 more
doaj   +1 more source