Results 71 to 80 of about 321,934 (301)
Syrian Journal for Science and InnovationThermal effects formed in a solid-state laser crystal, which cause the appearance of thermal lensing، mechanical stress and birefringence, lead to laser beam distortion and shorten the lifetime of laser crystal، and hinder getting a high-quality laser ...
I. Hasan Sulieman, M. Sayem El-daher
doaj +1 more source
Effects of Top-hat Laser Beam Processing and Scanning Strategies in Laser Micro-Structuring
Micromachines, 2020 The uniform energy distribution of top-hat laser beams is a very attractive property that can offer some advantages compared to Gaussian beams. Especially, the desired intensity distribution can be achieved at the laser spot through energy redistribution
Hoang Le +6 more
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Forcing Mutual Coherence in Diode Laser Stacks [PDF]
, 2014 This paper will discuss both theoretical and experimental attempts to improve the spatial beam quality of diode laser stacks using an external optical system.
Wurtz, Jonathan R
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Advanced Engineering Materials, EarlyView.This article demonstrates the successful qualification of a copper–tungsten composite for laser powder bed fusion. The resulting components exhibited high density, high thermal conductivity, and reduced thermal expansion. Heat sinks with complex geometries were successfully manufactured, clearly showcasing the material's potential for additive ...
Simon Rauh +6 more
wiley +1 more source
Compact 532 nm Laser With 59 mJ Pulse Energy Output
IEEE AccessWe have developed an external frequency doubling Nd:YAG laser with high beam quality, side-pumped by a high-temperature semiconductor laser. The beam quality was optimized using an unstable resonator configuration combined with a variable reflectivity ...
Ma Changzheng +4 more
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Beam Quality of Multicore Fibre Lasers
Acta Physica Polonica A, 2010 In the paper the beam quality of the phase-locked multicore fibre lasers was investigated. The beam quality factor (BQF) of the coherently combined beam of the multicore fibre lasers should be determinate as the laser optical output power in a central peak far-field bucket divided by the total optical output power radiating from the eective near-field.
M. Kochanowicz +3 more
openaire +1 more source
Duplex Stainless Steel Laser‐Surface Textured: Stability in Brine Solution
Advanced Engineering Materials, EarlyView.Controlled laser‐surface treatment (LST) of duplex DSS2205 steel is performed to increase its stability in brine solution under cyclic electrochemical assays. The superior protection with respect to flat and smooth panels is attributed to the presence of FeCr2O4 as the main protective oxide layer in the LST surface, after corrosion tests. The stability
Mohammad Rezayat +5 more
wiley +1 more source
Общие вопросы развития электроприводов современных металлорежущих станков [PDF]
, 1952 Besides their high efficiency and compact dimensions high power diode laser systems feature the modularity to from different beam shapes adapted to the respective application.
Hoffmann, D. +3 more
core
CO2 laser beam welding of AM60 magnesium-based alloy [PDF]
, 2010 The authors are grateful to FONDERIE MESSIER HONSEL group that provided the as-cast magnesium alloy workpieces. The authors would like also to acknowledge the technical support of Dr.
BARRALLIER, Laurent +4 more
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Advanced Engineering Materials, EarlyView.In this experimental study, the mechanical properties of additively manufactured Ti‐6Al‐4V lattice structures of different geometries are characterized using compression, four point bending and fatigue testing. While TPMS designs show superior fatigue resistance, SplitP and Honeycomb lattice structures combine high stiffness and strength. The resulting
Klaus Burkart +3 more
wiley +1 more source