Results 51 to 60 of about 3,061,892 (250)

Actively stabilized wavelength-insensitive carrier elimination from an electro-optically modulated laser beam

, 2012
We demonstrate a simple and robust technique for removal of the carrier wave from a phase-modulated laser beam, using a noninterferometric method that is insensitive to the modulation frequency and instead exploits the polarization dependence of electro ...
Freegarde, Tim, Cooper, Nathan, Dunning, Alexander, Bateman, James   +3 more
core   +1 more source

Influence of Scan Strategies in Electron Beam Powder Bed Fusion on Solidification, Microstructure, and High‐Temperature Compressive Properties of γ′‐Strengthened Inconel 738LC

Advanced Engineering Materials, EarlyView.
Experiments and thermophysical simulations were conducted to investigate the electron beam powder bed fusion electron beam (PBF‐EB/M) process for the γ′‐strengthened nickel‐based superalloy Inconel 738LC. The results demonstrate the impact of process‐induced microstructural variations on high‐temperature mechanical behavior, providing a basis for ...
Jan Niklas Petenati, Karthik Kumar Banku, Prasanth Bondi, Ivan Zhirnov, Yangyiwei Yang, Gordon Schmidt, Jürgen Christen, Georg Hasemann, Manja Krüger, Bai‐Xiang Xu, Bilal Gökce, Silja‐Katharina Rittinghaus   +11 more
wiley   +1 more source

Increasing of Pulsed Laser Source Peak Power by Use of Ring Fiber-Optic Delay Line

Приборы и методы измерений, 2019
At the present time, developing of autonomous laser systems requires increasing of the output power of the laser sources used in composition of those systems and at the same time reducing of the energy usage in the system.
V. A. Alekseev, M. R. Zaripov, A. S. Perminov, E. A. Sitnikova, V. P. Usol’tsev, S. I. Yuran   +5 more
doaj   +1 more source

Experimental optimization of orbital angular momentum beams generated by coherent beam combining digital laser

, 2023
International audienceWe experimentally implemented a genetic algorithm to improve the uniformity of a Laguerre-Gaussian beam generated with a 61-channels coherent beam combining digital ...
Ranély-Vergé-Dépré, Claude-Alban, Burger, Miloš, Fsaifes, Ihsan, Jovanovic, Igor, Chanteloup, Jean-Christophe, Becheker, Rezki   +5 more
core   +1 more source

Microstructure Modification of Additively Manufactured Mo–9Si–8B by Annealing and Its Effects on High‐Temperature Mechanical Properties

Advanced Engineering Materials, EarlyView.
Postbuild annealing systematically modifies the phase fractions and morphology of EB‐PBF processed Mo–9Si–8B. Quantitative microstructure–property correlations reveal how controlled phase evolution enhances high‐temperature compressive strength and creep resistance.
Christopher Schmidt, Yong Chen, Georg Hasemann, Benjamin Wahlmann, Carolin Körner, Manja Krüger   +5 more
wiley   +1 more source

Frequency Comb-Based Seed Laser Architecture With Improved Brillouin Performance for Spectral Beam Combining of Narrow-Linewidth Lasers

IEEE Photonics Journal
This study presents a novel approach to spectral beam combining for achieving high output powers with a compact, single module seed laser source based on frequency combs.
Shilpi Arora, Soubhik Pal, C. G. Lakshmi, Sarthak Dash, V.R. Supradeepa   +4 more
doaj   +1 more source

Beam reformatting and combining of high-power laser diode stacks

, 2010
Custom beam correction phase-plates developed for conserving brightness for diode laser bars in beam shaping/combining now provide multiple optical functions in one component, for new approaches to spatial, wavelength and coherent combining of arrays ...
Hall, D. R., D. R. Hall, J. J. Wendland, Baker, H. J., McBride, R., H. J. Baker, Trela, N., N. Trela, Wendland, J. J., R. McBride   +9 more
core   +1 more source

230 mW of blue light from a thulium-doped upconversion fiber laser [PDF]

, 1997
We demonstrate a powerful diode-pumped blue laser source, consisting of a 7W diode at 807nm that pumps a Nd:YAG laser giving 1.6W with good beam quality at 1123nm, and a thulium-doped upconversion fiber laser.
Tropper, A.C., Hanna, D.C., Moore, N., Clarkson, W.A., Maze, G., Paschotta, R., N. Moore, A.C. Tropper, D.C. Hanna, G. Maze, R. Paschotta, W.A. Clarkson   +11 more
core   +2 more sources

Investigating the Effect of Inclination Angle and the Influence of Scan Parameters on the Appearance and Thermal and Mechanical Properties of Filigree Tension Rods of LPBF‐Manufactured NiTi Shape‐Memory Alloys

Advanced Engineering Materials, EarlyView.
This article investigates the dependence of the properties on the manufacturing orientation in the form of the inclination angle to the build plate of LPBF‐fabricated NiTi rods with a diameter of 150–220 µm. Metallographic, chemical, thermal, and mechanical characterization show behavior under identical manufacturing conditions that ranges from ...
Sandra Herzig, Michael Werner, Christian Rotsch   +2 more
wiley   +1 more source

Laser beam cutting and welding of coronary stents [PDF]

, 2008
Coronary stents are thin-walled and mesh-structured metallic implants, which are made generally by laser beam cutting of high-precision tubes of 90-120 micrometer thickness.
Dobránszky, János, Bella, Sz., Meszlényi, György, Nagy, P.   +3 more
core   +1 more source