Results 91 to 100 of about 35,670 (298)
Precipitation Simulations of the O‐Phase in Ti2AlNb Alloys Processed by Laser Powder Bed Fusion
Advanced Engineering Materials, EarlyView.Simulated and experimental evolution of the O‐phase volume fraction during postprocessing of a Ti‐21Al‐25Nb (at.%) alloy processed by laser powder bed fusion. With results of sensitivity to input parameters from a thorough and quantified analysis, the interfacial energy matrix/precipitate is the most relevant input parameter for the simulation of the O‐
Silvana Tumminello +7 more
wiley +1 more source
Yb-doped femtosecond lasers and their frequency doubling [PDF]
, 2009 Ultralow threshold, compact and highly efficient femtosecond lasers based on Yb³⁺-doped potassium yttrium tungstate (Yb:KYW) and Yb³⁺-doped vanadium yttrium oxide (Yb:YVO 4 ) have been demonstrated within this PhD-research project.
Sarmani, Abdul Rahman
core
Advanced Engineering Materials, EarlyView.A combined experimental–computational framework identifies energy‐dependent laser absorptivity for NiTi in laser powder‐bed fusion, applicable to conduction and transition modes. Single‐track experiments and thermofluid smoothed particle hydrodynamics simulations are coupled through inverse analysis of melt pool geometry.
Mohamadreza Afrasiabi +3 more
wiley +1 more source
The fabrication and lithography of conjugated polymer distributed feedback lasers and development of their applications [PDF]
, 2007 This thesis presents a study of lasing properties and optical amplification in semiconducting conjugated polymers and dendrimers. Configured as surface-emitting distributed feedback lasers, the effect of incorporating wavelength-scale microstructure on ...
Richardson, Scott
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Solid-State Random Lasers [PDF]
, 2005 Random lasers are the simplest sources of stimulated emission without cavity, with the feedback provided by scattering in a gain medium. First proposed in the late 60’s, random lasers have grown to a large research field.
Noginov, Mikhail A
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Comparison of Triply Periodic Minimal Surface Energy Absorbers Under Uniaxial Compressive Loading
Advanced Engineering Materials, EarlyView.This study investigates LCD 3D printed Triply Periodic Minimal Surface (TPMS) structures as mechanical energy absorbers. By comparing various base designs and layered combinations under uniaxial compression, it identifies that a Diamond‐Gyroid sandwich structure offers superior performance.
Sergej Grednev +2 more
wiley +1 more source
Stable-unstable resonators for annular gain media [PDF]
, 2022 S.54-63 : Abb.,Lit.Annular gain media offer various advantages to the design of lasers. The advantages comprise efficient laser excitation by internal pumping sources for solid state lasers and large discharge surfaces for diffusion-cooling of high power
Habich, U., Plum, H.-D., Ehrlichmann, D.
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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 +11 more
wiley +1 more source
Nonlinear crystals for solid-state lasers [PDF]
, 2013 This chapter aims first to guide the reader through the basic concepts which are encountered in the field of nonlinear optical materials and frequency conversion. The second aim is to show the historical developments in the area of nonlinear crystals and
Pasiskevicius, Valdas,, V. Pasiskevicius
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Advanced Engineering Materials, EarlyView.Manufacturing problems such as heat treatment‐induced cracking hinder the widespread application of the laser powder bed fusion (LPBF) process to superalloys. In this study, cracks in the LPBF components of Inconel 738LC superalloy are characterized after heat treatment at various temperature ranges, revealing two distinct cracking behaviors.
Kosuke Kuwabara +4 more
wiley +1 more source