Results 21 to 30 of about 8,680 (259)

All-optical structuring of laser-driven proton beam profiles

Nature Communications, 2018
Shaping particle beams generated from laser-plasma accelerators is challenging. Here the authors demonstrate an all-optical method to structure the accelerated proton beam by modulating and imprinting the spatial laser profile onto the proton beam.
Lieselotte Obst-Huebl, Tim Ziegler, Florian-Emanuel Brack, João Branco, Michael Bussmann, Thomas E. Cowan, Chandra B. Curry, Frederico Fiuza, Marco Garten, Maxence Gauthier, Sebastian Göde, Siegfried H. Glenzer, Axel Huebl, Arie Irman, Jongjin B. Kim, Thomas Kluge, Stephan D. Kraft, Florian Kroll, Josefine Metzkes-Ng, Richard Pausch, Irene Prencipe, Martin Rehwald, Christian Roedel, Hans-Peter Schlenvoigt, Ulrich Schramm, Karl Zeil   +25 more
doaj   +1 more source

Beyond the IFTA – Phase mask generation for 3D laser beam shaping, tailored temperature distributions and optical amplifiers

Journal of the European Optical Society-Rapid Publications
The iterative Fourier transform algorithm (IFTA) is the most widely used algorithm for the generation of phase masks for laser beam shaping in the field of laser material processing. But its simplicity and efficiency also come with heavy limitations.
Hofmann Oskar, Buske Paul, Kurth Robin, Bonhoff Annika, Holly Carlo   +4 more
doaj   +1 more source

Review on Principal and Applications of Temporal and Spatial Beam Shaping for Ultrafast Pulsed Laser

Photonics
Ultrafast or ultrashort pulsed lasers have become integral in numerous industrial applications due to their high precision, non-thermal interaction with materials, and ability to induce nonlinear absorption.
Jong Hyun Kim, Hae Woon Choi
doaj   +1 more source

Effects of the adjustable ring-mode laser on intermetallic formation and mechanical properties of steel to aluminium laser welded lap joints

Materials & Design, 2023
Research has confirmed a positive effect of laser beam shaping on controlling weld profiles and keyhole stabilisation, with significant reductions of porosity in weldments.
S. Jabar, A. Baghbani Barenji, P. Franciosa, H.R. Kotadia, D. Ceglarek   +4 more
doaj   +1 more source

Partial depletion of plasminogen activator inhibitor‐1 decreases subcutaneous fat cell hypertrophy and liver cholesterol in high‐fat‐fed female mice

FEBS Letters, EarlyView.
Obesity raises blood levels of PAI‐1, a protein linked to metabolic dysfunction‐associated steatotic liver disease in people with obesity. In female mice fed a high‐fat diet, partially lowering PAI‐1 led to smaller subcutaneous fat cells and lower liver cholesterol, without changing body weight or insulin sensitivity.
Claudia E. Ramirez Bustamante, Robert Sharp, Pradip K. Saha, Elizabeth S. Anaya, Elizabeth L. Lieu, Evelyn L. de Groot, Pooja Patel, Mi Jeong Heo, Aaron R. Cox, Kang Ho Kim, Sean M. Hartig   +10 more
wiley   +1 more source

Understanding the Changed Mechanisms of Laser Beam Fusion Cutting by Applying Beam Oscillation, Based on Thermographic Analysis

Applied Sciences, 2021
The latest research on applying beam oscillation in laser beam fusion cutting revealed significant process improvements regarding speed and quality.
Thomas Pinder, Cindy Goppold
doaj   +1 more source

Raman‐based label‐free microscopic analysis of the pancreas in living zebrafish larvae

FEBS Open Bio, EarlyView.
Forward stimulated Raman scattering (F‐SRS) and epi coherent anti‐Stokes Raman scattering (E‐CARS) allow label‐free discrimination of distinct subcellular structures in the pancreas of living zebrafish larvae. Given the straightforward applicability, we anticipate broad implementation of Raman microscopy in other organs and across various biomedical ...
Noura Faraj, Eline M. F. de Lange, Klaas A. Sjollema, Ben N. G. Giepmans   +3 more
wiley   +1 more source

Guide to a Deterministic Control of Laser Materials Processing with Dynamic Beam Shaping

Journal of Manufacturing and Materials Processing
Dynamic beam shaping opens new possibilities for improving the quality and productivity of industrial laser material processing applications such as welding and cutting.
Rudolf Weber, Thomas Graf, Kim Glumann, Christian Hagenlocher, Ami Spira, Nina Armon, Ehud Greenberg, Rachel Assa, Eyal Shekel   +8 more
doaj   +1 more source

Polarization‐resolved femtosecond Vis/IR spectroscopy tailored for resolving weak signals in biological samples using minimal sample volume

FEBS Open Bio, EarlyView.
Unique biological samples, such as site‐specific mutant proteins, are available only in limited quantities. Here, we present a polarization‐resolved transient infrared spectroscopy setup with referencing to improve signal‐to‐noise tailored towards tracing small signals. We provide an overview of characterizing the excitation conditions for polarization‐
Clark Zahn, Karsten Heyne
wiley   +1 more source

Efficient beam shaping for high-power laser applications [PDF]

SPIE Proceedings, 2006
AbstractHigh‐power laser sources are used in many applications for material processing, like annealing, welding, soldering, printing and micro‐machining. Additionally, they are widely used as illumination sources for metrology – e.g. LIDAR – and vision systems based on CCD cameras.
Oliver Homburg, Dirk Hauschild, Frank Kubacki, Vitalij Lissotschenko   +3 more
openaire   +1 more source