Results 121 to 130 of about 691,548 (292)

Compact solid-state laser source for 1S-2S spectroscopy in atomic hydrogen

, 2005
We demonstrate a novel compact solid-state laser source for high-resolution two-photon spectroscopy of the $1S-2S$ transition in atomic hydrogen. The source emits up to 20 mW at 243 nm and consists of a 972 nm diode laser, a tapered amplifier, and two ...
F. Biraben, J. Alnis, M. Fischer, N. Kolachevsky, S. D. Bergeson, T. W. Hänsch, T. W. Hänsch   +6 more
core   +1 more source

Affecting the Properties of Copper–Graphene Electroconductive Composite by Severe Plastic Deformation

Advanced Engineering Materials, EarlyView.
Copper‐based composites enhanced with carbon feature convenient mechanical properties and favorable electric conductivity. Processing via deformation and thermomechanical treatments can introduce advantageous microstructures further enhancing their performance. Herein, copper–graphene powder‐based composites are directly consolidated via rotary swaging
Radim Kocich, Lenka Kunčická, Pavel Czernek, Zifan Wang   +3 more
wiley   +1 more source

Parameter Variation in Planetary Ball Milling of Titanium Aluminide Powder in XHV‐Adequate Atmosphere

Advanced Engineering Materials, EarlyView.
This study investigates the effects of milling parameters, including rotational speed, milling duration, and ball‐to‐powder ratio, on TiAl particle size and morphology in an XHV‐equivalent atmosphere. The creation of oxide‐free surfaces enhances the mechanical properties of green bodies.
Jytte Möckelmann, Armin Piwek, Julius Peddinghaus, Kai Brunotte, Bernd-Arno Behrens   +4 more
wiley   +1 more source

Nonradiative relaxation and laser action in tunable solid state laser crystals [PDF]

Room-temperature pulsed laser action was obtained in chromium-activated forsterite (Cr:Mg2SiO4) for both 532 and 1064 nm pumping. Free running laser emission in both cases is centered at 1235 nm and has a bandwidth of approximately 30 nm.
Alfano, R. R., Gayen, S. K., Petricevic, V.   +2 more
core   +1 more source

High‐Temperature Nanoindentation of Metals: Assessing Thermal Drift, Frame Compliance, and Chemical Composition Effects on the Reported Mechanical Properties

Advanced Engineering Materials, EarlyView.
Do not let thermal drift and instrument artifacts deceive high‐temperature nanoindentation results. We compare classical Oliver–Pharr and automatic image recognition analyses across steels and a Ni alloy to quantify these effects. Accounting for artifacts reveals systematic softening with temperature, while Cr and Ni additions boost resistance ...
Velislava Yonkova, Steffen Brinckmann, Ruth Schwaiger   +2 more
wiley   +1 more source

Introducing the Fission-Fusion Reaction Process: Using a Laser-Accelerated Th Beam to produce Neutron-Rich Nuclei towards the N=126 Waiting Point of the r Process

, 2010
We propose to produce neutron-rich nuclei in the range of the astrophysical r-process around the waiting point N=126 by fissioning a dense laser-accelerated thorium ion bunch in a thorium target (covered by a CH2 layer), where the light fission fragments
Allinger, K., Bin, J., Gross, M., Habs, D., Henig, A., Kiefer, D., Ma, W., Schreiber, J., Thirolf, P. G.   +8 more
core   +1 more source

Direct Metal Deposition of Graphene–Ti28Nb35.4Zr Matrix Composites With Enhanced Mechanical, Corrosion, and Biocompatibility Properties for Bone Implants

Advanced Engineering Materials, EarlyView.
Graphene nanoplatelet (0.1 wt.%) reinforcement significantly enhances the performance of β Ti‐28Nb‐35.4Zr alloy. Grain refinement, reduced water contact angle, and improved surface characteristics promote osteoblast adhesion and complete surface coverage after 7 days.
Khurram Munir, Jixing Lin, Yuncang Li, Li Zhu, Paul F. A. Wright, Cuie Wen   +5 more
wiley   +1 more source

Theoretical and Experimental Analysis of the Effect of Vaporization Heat on the Interaction between Laser and Biological Tissue

Applied Sciences
A theoretical model, based on the classical Pennes’ bioheat theory, incorporating various boundary conditions, was established and compared to analyze the influence of the latent heat of vaporization via simulation. The aim was to elucidate the extent of
Yuru Cheng, Yu Shen, Yuxia Gao, Ya Wen, Ze Lv, Erpeng Wang, Mingli Wang, Shenjin Zhang, Yong Bo, Qinjun Peng   +9 more
doaj   +1 more source

Mathematical modeling of a Ti:sapphire solid-state laser [PDF]

The project initiated a study of a mathematical model of a tunable Ti:sapphire solid-state laser. A general mathematical model was developed for the purpose of identifying design parameters which will optimize the system, and serve as a useful predictor ...
Swetits, John J.
core   +1 more source

An all-solid-state laser source at 671 nm for cold atom experiments with lithium

, 2011
We present an all solid-state narrow line-width laser source emitting $670\,\mathrm{mW}$ output power at $671\,\mathrm{nm}$ delivered in a diffraction-limited beam.
A. Agnesi, A. Agnesi, A. Arie, A. Miffre, A. Zukauskas, A.-Y. Yao, A.-Y. Yao, A.E. Siegman, A.W. Tucker, B. Boulanger, C. Canalias, C. Canalias, C. Chin, C. Salomon, D.B. Leviton, E. Mimoun, E. Mimoun, F. Biraben, F. Chevy, F. Gerbier, F. Lenhardt, F. Song, F. Torabi-Goudarzi, F.J. Kontur, G. Trénec, G. Trénec, G.D. Boyd, H. Ogilvy, I.E. Olivares, J. Vigué, J.T.F. Johnston, K. Fradkin, L. Fornasiero, L. McDonagh, L. Zhang, L.E. Myers, M. Okida, M. Peltz, P. Laporta, Q. Zheng, Q. Zheng, R. Boyd, R. Sarrouf, R. Sarrouf, R. Smith, S. Emanueli, S. Nascimbène, S.A. Payne, U. Eismann, V.A. Maslov, W. Leeb, W.I. McAlexander, W.W. Rigrod, Y.-F. Chen, Y.-F. Lü, Y.F. Chen, Y.F. Chen, Y.F. Chen   +57 more
core   +3 more sources