Results 51 to 60 of about 39,132 (296)

UV generation in a pure-silica holey fiber [PDF]

, 2003
We report supercontinuum generation extending to 300nm in the UV from a pure-silica holey fiber. The broad spectrum was obtained by launching ultra-short pulses (~150fs, 10nJ at 820nm) from an amplified Ti:sapphire laser.
J.J. Baumberg, J.H.V. Price, Baumberg, J.J., Richardson, D.J., J.C. Baggett, Paschotta, R., W. Belardi, Price, J.H.V., Baggett, J.C., Coyle, S., R. Paschotta, D.J. Richardson, Monro, T.M., S. Coyle, Netti, C., Richardson, D., Monro, T., Price, J., Belardi, W., T.M. Monro, Furusawa, K., Baggett, J., K. Furusawa, Baumberg, J., C. Netti   +24 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

Sub-100-fs Ultrafast Fiber Laser Using Nonlinear Optical Fiber Systems: Perspectives and Challenges

Ultrafast Science
Sub-100-fs ultrafast fiber lasers are crucial light sources for various practical applications. Generating these lasers directly from fiber laser oscillators remain an important yet challenging task. Here, a comprehensive review is conducted on 2 general
Kuen Yao Lau, Meng Pang, Minglie Hu, Xiaofeng Liu, Nianqiang Li, Jianrong Qiu   +5 more
doaj   +1 more source

Additive Manufacturing of Continuous Fibre Reinforced Composites: Process, Characterisation, Modelling, and Sustainability

Advanced Engineering Materials, EarlyView.
Additive manufacturing provides precise control over the placement of continuous fibres within polymer matrices, enabling customised mechanical performance in composite components. This article explores processing strategies, mechanical testing, and modelling approaches for additive manufactured continuous fibre‐reinforced composites.
Cherian Thomas, Amir Hosein Sakhaei
wiley   +1 more source

Recent Developments of Quantum Dot Materials for High Speed and Ultrafast Lasers

Nanomaterials, 2022
Owing to their high integration and functionality, nanometer-scale optoelectronic devices based on III-V semiconductor materials are emerging as an enabling technology for fiber-optic communication applications.
Zhonghui Yao, Cheng Jiang, Xu Wang, Hongmei Chen, Hongpei Wang, Liang Qin, Ziyang Zhang   +6 more
doaj   +1 more source

Current Status and Challenges in Data Collection for Aerospace Coatings Deposited by Plasma Spraying

Advanced Engineering Materials, EarlyView.
An innovative approach has been integrated into the GRENAT project to optimize plasma spraying and coating performance. Raw materials are accelerated and melted in the plasma generated by torches, creating coatings. Monitoring sensors collect process data which are combined with ex situ characterization data.
Lila Randriamananjara, Vincent Rat, Quentin Dubreuil, Patrice Valorge, Simon Goutier, Alain Denoirjean, Olivier Messe, Céline Ruelle, Jean‐Philippe Poli   +8 more
wiley   +1 more source

A Chaotic State in the Transition From Single Toward Multiple Pulse for Soliton Fiber Lasers

IEEE Photonics Journal, 2020
High-order soliton in anomalous-dispersion ultrafast fiber lasers is rarely researched due to its intrinsic instability in dissipative systems. For the first time, we numerically demonstrate the ultrafast pulse in fiber lasers will deviate from the ...
Yueqing Du, Mengmeng Han, Xuewen Shu
doaj   +1 more source

Mitigation of stimulated Raman scattering in high power fiber lasers using transmission gratings

, 2022
Paper 105121I, 8 S.The average output power of fiber lasers have been scaled deep into the kW regime within the recent years. However a further scaling is limited due to nonlinear effects like stimulated Raman scattering (SRS).
Schreiber, T., Liem, A., Goebel, T.A., Matzdorf, C., Heck, M., Bock, V., Nolte, S., Richter, D., Tünnermann, A., Krämer, R.G.   +9 more
core   +1 more source

Enhancing Bubble Removal in Geometry‐Optimized Electrodes

Advanced Engineering Materials, EarlyView.
3D‐printed lattice electrodes outperform stochastic foams in alkaline water electrolysis despite 20%–25% lower surface area. Straight flow channels generate Venturi‐like bubble entrainment, suppressing gas accumulation that renders foam interiors electrochemically inactive.
Florian Wiesner, Peter Förster, Alexander Limper, Anselm Brodersen, Matthias Wessling, John Linkhorst   +5 more
wiley   +1 more source

Supermode Si/III-V Lasers and Circular Bragg Lasers [PDF]

, 2010
Semiconductor lasers are arguably the most important component in optical communications. This thesis investigates two types of semiconductor lasers that are useful in integrated optics.
Sun, Xiankai
core   +1 more source