Results 101 to 110 of about 7,941,196 (306)
Silica hollow core microstructured fibers for beam delivery in industrial and medical applications [PDF]
, 2015 The focus of this review is our recent work to develop microstructured hollow core fibers for two applications where the flexible delivery of a single mode beam is desired.
Fei Yu +39 more
core +1 more source
Beam quality deterioration of lasers caused by intracavity beam distortions
Optics Express, 2006 It is well known that beam distortions in a laser cavity can deteriorate the laser's beam quality, but why and exactly how the impact of such distortions can strongly depend on details of the resonator setup has not been studied in detail. This article clarifies the issue with a simple resonant mode coupling model, explaining e.g.
openaire +2 more sources
Advanced Engineering Materials, EarlyView.Binder‐free laser powder bed fusion of 8YSZ with a femtosecond laser is used to map process windows linking scan strategy, heat accumulation, and grain growth. Time‐resolved thermography and simulations reveal thermal regimes that enable continuous, vitrified, and fine‐grained 8YSZ surface layers without absorptive additives and demonstrate ...
Markus Kühn +5 more
wiley +1 more source
Experimental Performance Investigation of Digital Beamforming on Synthetic Aperture Radar [PDF]
, 2008 In this paper, we present the experimental results of a Digital Beam Forming (DBF) Synthetic Aperture Radar (SAR) performance on the purpose of the High- Resolution Wide-Swath (HRWS) SAR concept.
Junghyo Kim +5 more
core +1 more source
Optimization of the Geometrical Parameters for the Output Mirror in a He-Ne Laser
Science Journal of University of Zakho, 2013 The aim of this study is to produce a model via iterative description of the beam distribution to connect the output power of a He-Ne, continuous and low power laser in terms of its beam radius by operating it as regular pattern of repeated wave front ...
Delshad O. Abdul-Rahim, Saman Q. Mawlud
doaj
Double-Clad Anti-Resonant Hollow-Core Fiber With Inner Cladding Tube Offset for Mode Tailoring
IEEE Photonics JournalWe demonstrate a double-clad anti-resonant hollow-core fiber (DC-ARF) with an offset inner cladding structure for effective mode tailoring. The DC-ARF consists of six thin-walled, azimuthally offset inner tubes enclosed within a thicker outer cladding ...
Yang Wang +4 more
doaj +1 more source
Advanced Engineering Materials, EarlyView.CT‐based finite element simulations combined with in situ X‐ray computed tomography are used to analyze insert pull‐out in nickel‐coated polymer foams. Despite variations in material parameters, deformation consistently concentrates within a narrow annular region around the insert.
Yannik Bautz +4 more
wiley +1 more source
Quantifying fundamental mode purity with M2-measurements
JPhys PhotonicsBeam quality is a fundamental aspect for evaluating the performance of laser sources. M ^2 -measurements serve as the gold standard for beam quality assessment since the 1990s.
Filipp Lausch +2 more
doaj +1 more source
Design of a Multistable Finger Prosthesis with Programmable Metamaterials
Advanced Engineering Materials, EarlyView.This research article shows the development of a multistable programmble metamaterial for the use as a finger prosthesis. The material was designed on different hierarchical levels where the influence of geometrical parameters and combination of mechanical elements was explored.
Franziska Wenz +5 more
wiley +1 more source
Performance Evaluation of Distributed-Antenna Communications Systems Using Beam-Hopping
, 2005 Digital beamforming (DBF) techniques are capable of improving the performance of communications systems significantly. However, if the transmitted signals are conflicted with strong interference, especially, in the direction of the transmitted beams ...
Yang, L.-L., Zhu, J., Hu, H.
core +1 more source