Results 71 to 80 of about 398,203 (278)

Mode-locked dysprosium fiber laser: picosecond pulse generation from 2.97 to 3.30 {\mu}m

, 2018
Mode-locked fiber laser technology to date has been limited to sub-3 {\mu}m wavelengths, despite significant application-driven demand for compact picosecond and femtosecond pulse sources at longer wavelengths.
Jackson, S. D., Majewski, M. R., Woodward, R. I.   +2 more
core   +1 more source

Thermomechanical Fatigue and Creep–Fatigue Interaction of Inconel 718 Additively Manufactured by Laser Beam Powder Bed Fusion

Advanced Engineering Materials, EarlyView.
Thermomechanical fatigue tests of laser beam powder bed fusion (PBF‐LB) Inconel 718 show that the additively manufactured material reaches almost the lifetimes of conventionally‐rolled material under no‐dwell conditions. Introducing dwell times at the maximum temperature markedly reduces the lifetimes due to pronounced grain boundary sliding associated
Stefan Guth, Tomáš Babinský, Jan Lars Riedel, Wen Hao Kan, Aijun Huang, Martin Heilmaier, Ivo Šulák   +6 more
wiley   +1 more source

Structured Scintillators for Efficient Radiation Detection

Advanced Science, 2022
Scintillators, which can convert high‐energy ionizing radiation into visible light, have been serving as the core component in radiation detectors for more than a century of history. To address the increasing application demands along with the concern on
Ziyu Lin, Shichao Lv, Zhongmin Yang, Jianrong Qiu, Shifeng Zhou   +4 more
doaj   +1 more source

Optical fibers with interferometric path length stability by controlled heating for transmission of optical signals and as components in frequency standards [PDF]

, 2005
We present a simple method to stabilize the optical path length of an optical fiber to an accuracy of about 1/100 of the laser wavelength. We study the dynamic response of the path length to modulation of an electrically conductive heater layer of the ...
A. Peters, B. Beauvoir de, B.C. Young, C. Braxmaier, C. Braxmaier, C. Daussy, C. Gobby, F. Schmidt-Kaler, G. Wilpers, H. Müller, H. Müller, H. Müller, H. Müller, H. Müller, J. Ye, K. Imai, L.-S. Ma, M. Eichenseer, M. Notcutt, N. Lagakos, N. Shibata, R. Hughes, R.F.C. Vessot, R.W.P. Drever, S. Bize, S.A. Webster, T.P. Krisher, Th. Udem   +27 more
core   +1 more source

Effect of Laser Deoxidation on Adhesive‐Bonded Aluminum in an Oxygen‐Free Atmosphere

Advanced Engineering Materials, EarlyView.
This study investigates laser ablation of aluminum under oxygen‐free conditions. The goal is to produce oxide‐free substrates that enable improved adhesive bonding with epoxy. Optimized laser parameters (90% overlap, 300 µJ) combined with oxide‐free substrates result in the highest tensile strength of the adhesive bond.
Sandra Gerland, Finn‐Lennard Janthur, Sarah Seffer, Jörg Hermsdorf, Ludger Overmeyer, Annika Raatz   +5 more
wiley   +1 more source

Topological Photonic States in Waveguide Arrays

Advanced Physics Research, 2023
Topological photonics, accompanied by the ability to manipulate light, has emerged as a rapidly growing field of research. More platforms for displaying novel topological photonic states are being explored, thus offering efficient strategies for the ...
Juan Kang, Ruishan Wei, Qinglong Zhang, Guoping Dong   +3 more
doaj   +1 more source

Al–Cu Composite Casting of Laser‐Deoxidized Copper: Bonding, Interfacial Chemistry, and Thermal Conductivity

Advanced Engineering Materials, EarlyView.
This study investigates laser‐based oxide removal of Cu inserts in oxygen‐free conditions and examines long‐term oxidation kinetics and surface chemistry under different atmospheres via X‐ray photoelectron spectroscopy. Al–Cu compound casting with differently oxidized surfaces is performed, and intermetallic phase formation, morphology, and thermal ...
Timon Steinhoff, Finn‐Lennard Janthur, Sascha Zimmermann, Sarah Seffer, Jörg Hermsdorf, René Gustus, Ludger Overmeyer, Wolfgang Maus‐Friedrichs, Hans Jürgen Maier, Christian Klose   +9 more
wiley   +1 more source

Development of a high power, quasi-single-mode fiber laser for drilling holes on a thin metal plate at distance of 500 m from laser head

Materials Research Express
We present the development of a high-power quasi-single-mode fiber laser system with an output of approximately 1.5 kW continuous-wave and M ^2  
Tuan Banh Quoc, Dat Hoang Luu, Thien Cao Khac, Long Ngo Hai, Hoang Do Viet, Binh Le Van, Nhan Hoang Ngoc   +6 more
doaj   +1 more source

Investigation of Oxygen‐Free Wetting Behavior of Aluminum on Copper via Molecular Dynamics Simulations and Experiments

Advanced Engineering Materials, EarlyView.
The wettability of aluminum droplets (Al) on different copper substrates (Cu), where liquid Al spreads on solid Cu surfaces to form a liquid–solid interface, is studied numerically and experimentally. The experimental and numerical results show good agreement in the fast‐spreading regime.
Shan Lyu, Timon Steinhoff, Finn‐Lennard Janthur, Sarah Seffer, Jörg Hermsdorf, Christian Klose, Ludger Overmeyer, Hans‐Jürgen Maier, Nina Merkert   +8 more
wiley   +1 more source

40 W All-Fiber Er/Yb MOPA System Using Self-Fabricated High-Power Passive Fiber Components

Applied Sciences, 2018
In this work, we demonstrate a three-stage all-fiber master oscillator power amplifier (MOPA) system emitting over 40 W of continuous-wave (CW) output power at ~1.5 µm. The setup utilizes three self-fabricated high-power passive fiber components: a
Pawel Kaczmarek, Dorota Stachowiak, Krzysztof M. Abramski   +2 more
doaj   +1 more source