Results 61 to 70 of about 691,548 (292)

Influence of Sample Preparation and Processing Procedures on the Thermal Diffusivity of MgO‐C Refractories

Advanced Engineering Materials, EarlyView.
The thermal diffusivity of MgO‐C refractories is highly sensitive to sample preparation and processing procedures. In this article, the effects of coking sequence, machining conditions, structural inhomogeneity, and graphite coating application on measurements using laser flash apparatus are systematically investigated.
Luyao Pan, Rhena Wulf, Till M. J. Stadtmüller, Christos G. Aneziris, Tobias M. Fieback   +4 more
wiley   +1 more source

Mechanisms driving different QPD cells response signals revealed by a single cell irradiated with a laser

Scientific Reports
The response mechanism of a Four-Quadrant Photodetector (QPD) in an experimental setting was studied by irradiating a single QPD cell with a millisecond-pulsed laser.
Weiwei Chen, Hongxu Liu, De Song
doaj   +1 more source

Investigation on Characteristics of 3–5 μm Mid-Infrared Optical Parametric Amplification in LiInS₂

IEEE Photonics Journal
The optical parametric amplification process in the mid-infrared (MIR) 3–5 μm region of nonlinear crystal LiInS2 (LIS) has been investigated. The LIS crystal was pumped by a 1064 nm laser with a pulse width of 30 picoseconds and seeded by a
Jingjing Zhang, Feng Yang, Yuanzhai Xu, Hongwei Gao, Yong Bo   +4 more
doaj   +1 more source

Slow-Light Effect and Mode Selection of Double Fiber Ring With a Fiber Bragg Grating

IEEE Photonics Journal, 2018
A novel slow-light reflector composed of a double-ring resonator with a uniform fiber Bragg grating (FBG) incorporated is proposed in this paper, which can be used as a mirror of narrow-linewidth fiber laser, based on its enlarged group delay, and as a ...
Xiaoqiong Qin, Zujie Fang, Kang Ying, Zhidan Ding, Di Wang, Fang Wei, Fei Yang, Qing Ye, Ronghui Qu, Haiwen Cai   +9 more
doaj   +1 more source

Eye-Safe Solid-State Quasi-CW Raman Laser with Millisecond Pulse Duration

, 2012
We demonstrate the first quasi-CW (ms-long pulses, pump duty cycle of 10%) end-diode pumped solid state laser generating eye-safe radiation via intracavity Raman conversion. The output power at the first Stokes wavelength (1524 nm) was 250 mW.
Agnesi, Anton A. Kananovich, Apanasevich, Apanasevich, Bermudez, Boyd, Cerný, Chen, Dekker, Dekker, Demidovich, Di Lieto, Dmitriy H. Zusin, Fan, Grabchikov, Grabtchikov, Grasjuk, Innocenzi, Kaminskii, Kananovich, Kananovich, Lee, Lee, Lisinetskii, Ogilvy, Omatsu, Pask, Pask, Pask, Pavel, Pavel A. Apanasevich, Sato, Tidwell, Valentin A. Orlovich, Vladimir I. Dashkevich, Weber, Yao, Zagumennyi   +37 more
core   +1 more source

Characterization of Nitinol Produced by Laser Powder Bed Fusion for Mechanical Metamaterial Applications

Advanced Engineering Materials, EarlyView.
Stabilization of L‐PBF Ni50.7Ti49.3 under low‐cycle loading was investigated. Recoverable strain after cycling was dependent on the amount of applied load. Recovery ratio was 53.4% and 35.1% at intermediate and high load, respectively. The maximum total strain reached 10.3% at a high load of 1200 MPa.
Ondřej Červinek, Jakub Hurník, Miroslav Šmíd, Ondřej Zobač, Melanie Todt, Daniel Koutný   +5 more
wiley   +1 more source

Reduction of Oxide Inclusions During the High‐Frequency Welding of Steel via a Nonthermal Ar/H2 Plasma Jet

Advanced Engineering Materials, EarlyView.
High‐frequency (HF) welding of steel is limited by oxide inclusions that degrade weld quality. This study demonstrates, for the first time, the integration of a nonthermal Ar/H2 dielectric barrier discharge (DBD) plasma jet into HF welding. Local plasma treatment provides effective shielding and in‐situ oxide reduction, resulting in markedly fewer and ...
Viktor Udachin, Lienhard Wegewitz, René Gustus, Henning Wiche, Wolfgang Maus‐Friedrichs   +4 more
wiley   +1 more source

2-kW Average Power CW Phase-Conjugate Solid-State Laser [PDF]

, 2007
We have demonstrated stable operation of a 2-kW Yb:YAG phase-conjugate master oscillator power amplifier (PC-MOPA) laser system with a loop phase-conjugate mirror (LPCM). This is the first demonstration of a continuous wave (CW)-input LPCM MOPA operating
Baltimore, Robert S., Betin, Alexander A., Clatterbuck, Todd O., Filgas, David M., Ostby, Eric P., Rockwell, David A., Shkunov, Vladimir V., Strohkendl, Friederich P., Zakharenkov, Yuri A.   +8 more
core   +1 more source

Handbook of Establishing and Maintaining Oxygen‐Free Atmospheres

Advanced Engineering Materials, EarlyView.
This study presents a practical framework for creating oxygen‐free atmospheres at ambient pressure using silane‐doped inert gases. The results show that ultra‐low oxygen levels and strongly reduced water content can be achieved through controlled silane dosing, drying systems, and sensor monitoring.
Sascha Jan Zimmermann, René Gustus, Lienhard Wegewitz, Wolfgang Maus‐Friedrichs   +3 more
wiley   +1 more source

Oxide‐Free Titanium Coatings by Wire Arc Spraying in a Silane‐Doped Inert Atmosphere

Advanced Engineering Materials, EarlyView.
A silane‐doped argon atmosphere enables the production of oxide‐free titanium coatings via twin‐wire arc spraying at ambient pressure. This innovative approach eliminates residual oxygen, creating process conditions that prevent oxidation and nitride formation.
Manuel Rodriguez Diaz, Maik Szafarska, René Gustus, Kai Möhwald, Hans Jürgen Maier   +4 more
wiley   +1 more source