Results 31 to 40 of about 129,758 (300)

Modeling of flowing gas diode pumped rare gas atoms laser

Results in Physics
Diode-pumped rare gas lasers (DPRGLs) have the potential for high optical conversion efficiency and excellent beam quality, positioning them as promising candidates for directed energy lasers. This study proposes a semi-analytical model for a flowing gas
Hongyu Liu, Hanyuan Chen, Donglin Ma
doaj   +1 more source

Characterization of Defect Distribution in an Additively Manufactured AlSi10Mg as a Function of Processing Parameters and Correlations with Extreme Value Statistics

Advanced Engineering Materials, EarlyView.
Predicting extreme defects in additive manufacturing remains a key challenge limiting its structural reliability. This study proposes a statistical framework that integrates Extreme Value Theory with advanced process indicators to explore defect–process relationships and improve the estimation of critical defect sizes. The approach provides a basis for
Muhammad Muteeb Butt, Varma Kvvssn, Hossein Laieghi, Zia Uddin, Peyman Ansari, E. Kıvanç Sadak, Can Barış Toprak, Hüseyin Kızıl, Enrico Salvati   +8 more
wiley   +1 more source

Ion laser plasmas [PDF]

, 1971
The typical noble gas ion laser plasma consists of a high-current-density glow discharge in a noble gas, in the presence of a magnetic field. Typical CW plasma conditions are current densities of 100 to 2000 A/cm^2, tube diameters of 1 to 10 mm, filling ...
Bridges, William B., Chester, Arthur N., Halsted, A. Stevens, Parker, Jerald V.   +3 more
core   +1 more source

Experimental Evaluation of 100Cr6 Steel Microindented Surfaces Under Lubricated Nonconformal Point Contacts

Advanced Engineering Materials, EarlyView.
The tribological behavior of 100Cr6 steel spheres textured via Vickers microindentation is evaluated under lubricated sliding by varying both dimple size and density. Fine and dense textures significantly reduce friction across all lubrication regimes, while large dimples increase it.
Farideh Davoodi, Pasquale Guglielmi, Gianfranco Palumbo, Giuseppe Carbone   +3 more
wiley   +1 more source

Tunable Near-Infrared Laser Emission at 1.7 μm Generated by Stimulated Raman Scattering of Sulfur Hexafluoride Molecules in Anti-Resonant Hollow-Core Fibers

Photonics
Fiber lasers operating at 1.7 μm have significant application value in fields such as gas detection and material processing due to their characteristics, including compact structure and ease of thermal management. Based on the stimulated Raman scattering
Peicong Liu, Tianyu Li, Wenxi Pei, Luohao Lei, Jing Shi, Guorui Lv, Qi Chen, Guangrong Sun, Yamei Xu, Shuyi Wang, Zhiyue Zhou, Zefeng Wang   +11 more
doaj   +1 more source

New technologies of laser processing

Авіаційно-космічна техніка та технологія, 2021
Subject and purpose. Currently, gas, solid-state, and fiber lasers are used to process materials in the aviation industry. For the thermal treatment of steels, gas CO2 lasers with a capacity of more than 1 kW used, which are reliable in operation but ...
Ольга Валентинівна Афанасьєва, Наталія Олексіївна Лалазарова, Олена Георгіївна Попова   +2 more
doaj   +1 more source

Glassy behavior of light

, 2005
We study the nonlinear dynamics of a multi-mode random laser using the methods of statistical physics of disordered systems. A replica-symmetry breaking phase transition is predicted as a function of the pump intensity.
A. Gordon, A. Yariv, C. Conti, C. W. Gardiner, F. Zamponi, G. Ruocco, H. Haken, H. Risken, H. A. Haus, L. Angelani, L. Cugliandolo, M. Mézard, R. W. Boyd, V. S. Lethokov   +13 more
core   +2 more sources

Imaging Molecular Structure through Femtosecond Photoelectron Diffraction on Aligned and Oriented Gas-Phase Molecules [PDF]

, 2014
This paper gives an account of our progress towards performing femtosecond time-resolved photoelectron diffraction on gas-phase molecules in a pump-probe setup combining optical lasers and an X-ray Free-Electron Laser.
Adolph, Marcus, Anielski, Denis, Aquila, Andrew, Bari, Sadia, Boll, Rebecca, Bomme, Cedric, Bostedt, Christoph, Bozek, John D., Chapman, Henry N., Christensen, Lauge, Coffee, Ryan, Coppola, Niccola, De, Sankar, Decleva, Piero, Epp, Sascha W., Erk, Benjamin, Filsinger, Frank, Foucar, Lutz, Gorkhover, Tais, Gumprecht, Lars, Hoemke, Andre, Holmegaard, Lotte, Johnsson, Per,, Kienitz, Jens S., Kierspel, Thomas, Krasniqi, Faton, Kuehnel, Kai-Uwe, Kuepper, Jochen, Lund University., Maurer, Jochen, Messerschmidt, Marc, Moshammer, Robert, Mueller, Nele L. M., Rolles, Daniel, Rouzee, Arnaud, Rudek, Benedikt, Rudenko, Artem, Savelyev, Evgeny, Schlichting, Ilme, Schmidt, Carlo, Scholz, Frank, Schorb, Sebastian, Schulz, Joachim, Seltmann, Joern, Stapelfeldt, Henrik, Stener, Mauro, Stern, Stephan, Techert, Simone, Thogersen, Jan, Trippel, Sebastian, Ullrich, Joachim, Viefhaus, Jens, Vrakking, Marc   +52 more
core   +3 more sources

Low‐Cost, Large‐Scale Nanoporous Metals by Mechanical Alloying, Oxide Reduction, and Dealloying of Powders

Advanced Engineering Materials, EarlyView.
Powder metal processing provides scalable advantages in nanoporous (np) metal development. Mechanical alloying is used to produce unique precursors for hybrid nanopore formation by oxide reduction and dealloying. As demonstrated in np Ag, this approach improves process efficiency while promoting smaller ligaments and larger pores, both of which are ...
Mark A. Atwater, Oliver A. Fowler
wiley   +1 more source

Multi-Component and Multi-Point Trace Gas Sensing in Wavelength Modulation Spectroscopy Based on Wavelength Stabilization

Photonic Sensors, 2019
Multi-component and multi-point trace gas sensing in the wavelength modulation spectroscopy is demonstrated based on the frequency-division multiplexing and time-division multiplexing technology.
Zongliang Wang, Jun Chang, Huishan Yu, Cunwei Tian, Hao Zhang, Xiukun Zhang, Longfei Tang, Qinduan Zhang, Yiwen Feng   +8 more
doaj   +1 more source