Results 121 to 130 of about 3,522,694 (343)

Quality Enhancement of Laser Powder‐Bed Fusion Parts by Acoustically Assisted Additive Manufacturing by Laser Powder‐Bed Fusion and its Application to Lattice Structures

Advanced Engineering Materials, EarlyView.
Additive manufacturing technologies like laser powder‐bed fusion offer great design freedom and individualization of products down to a batch size of one. However, parts fabricated with this technology suffer from poor quality. Acoustic assistance during the build process can minimize these drawbacks.
Oliver Maurer, Dirk Bähre
wiley   +1 more source

Femtosecond pump probe spectroscopy for the study of energy transfer of light-harvesting complexes from extractions of spinach leaves

South African Journal of Science, 2009
Measurements of ultrafast transient processes, of temporal durations in the picosecond and femtosecond regime, are made possible by femtosecond pump probe transient absorption spectroscopy. Such an ultrafast pump probe transient absorption setup has been
S. Ombinda-Lemboumba, A. du du Plessis, R.W. Sparrow, P. Molukanele, L.R. Botha, E.G. Rohwer, C.M. Steenkamp, L. van Rensburg   +7 more
doaj  

S2-Method-Based Monitoring of Modal Composition in Optical Fibers during Fiber Component Manufacturing [PDF]

EPJ Web of Conferences, 2022
Haverland N., Wellmann F., Neumann J., Kracht D.   +3 more
doaj   +1 more source

EXPANSION RATES OF THE LUMINOUS FRONT OF A LASER‐PRODUCED PLASMA [PDF]

, 1966
Hugo Weichel, P. V. Avizonis
openalex   +1 more source

Development of Aluminum Scandium Alloys for Hydrogen Storage Valves

Advanced Engineering Materials, EarlyView.
Different aluminum alloy series and various aluminum‐scandium alloys with differing Sc and Zr levels are evaluated for use in hydrogen storage valve production. The alloys undergo hardness testing, optical microscopy, and tensile strength analysis, with hardening behavior studied under varying conditions.
Francisco García‐Moreno, Tillmann Robert Neu, Markus Eberl, Paul Hans Kamm, Hans‐Wolfgang Seeliger   +4 more
wiley   +1 more source

Supercontinuum generation in bulk solid-state material with bursts of femtosecond laser pulses

Scientific Reports
We report on experimental and numerical investigation of burst-mode supercontinuum generation in sapphire crystal. The experiments were performed using bursts consisting of two 190 fs, 1030 nm pulses with intra-burst repetition rates of 62.5 MHz and 2.5 ...
B. Momgaudis, V. Marčiulionytė, V. Jukna, G. Tamošauskas, M. Barkauskas, A. Dubietis   +5 more
doaj   +1 more source

Studies of Photosynthesis Using a Pulsed Laser

, 1966
Don De Vault, Britton Chance
openalex   +1 more source

FREQUENCY SPLITTING AND MODE COMPETITION IN A DUAL-POLARIZATION He-Ne GAS LASER [PDF]

, 1964
Walter M. Doyle, Matthew B. White
openalex   +1 more source

Residual Stress States in Microstructurally Graded PBF–LB/M Austenitic Steel Components

Advanced Engineering Materials, EarlyView.
This study examines microstructurally graded 316L rectangular tube profiles fabricated via PBF–LB/M using a dual‐laser system. A 1 kW top‐hat and a 400 W Gaussian laser create distinct grain sizes and crystallographic texture. Mechanical properties are linked to microstructural evolution driven by processing conditions.
Nico Möller, Florian Loebich, Thomas Wegener, Julia Richter, Jens Gibmeier, Thomas Niendorf   +5 more
wiley   +1 more source

Highly efficient side-fused signal pump combiners based on CO2-laser restructured optical fibers [PDF]

EPJ Web of Conferences, 2022
Brockmüller E., Kleihaus L., Wellmann F., Lachmayer R., Neumann J., D. Kracht   +5 more
doaj   +1 more source