Results 81 to 90 of about 5,228,844 (338)

Monolithic fiber laser oscillator with record high power

Laser Physics Letters, 2018
With an increasing output power, the power scaling of monolithic fiber laser oscillators faces the severe limitations of stimulated Raman scattering (SRS) and the transverse mode instability (TMI) effect.
Baolai Yang, C. Shi, Hanwei Zhang, Q. Ye, Haoyang Pi, R. Tao, Xiaolin Wang, P. Ma, Jinyong Leng, Zilun Chen, P. Zhou, Xiaojun Xu, Jinbao Chen, Zejin Liu   +13 more
semanticscholar   +1 more source

Erbium:ytterbium co-doped large-core fiber laser with 297W continuous-wave output power [PDF]

, 2007
We have demonstrated a high-power and high-efficiency erbium:ytterbium (Er:Yb) co-doped fiber laser that produces 297 W of continuous-wave output at 1567 nm.
Nilsson, J., Jayanta K. Sahu, Mike Lovelady, Piper, A., Johan Nilsson, David N. Payne, Yoo, S., R. Horley, Andy Piper, Payne, D.N., Lovelady, M., Christophe A. Codemard, Jeong, Y., Hickey, L.M.B., Andrew Harker, Yoonchan Jeong, Louise Hickey, Turner, P.W., Horley, R., P. W. Turner, Codemard, Christophe, Harker, A.T., Sahu, J.K., Seongwoo Yoo   +23 more
core   +1 more source

Controlling Grain Growth in Powder Bed Fusion of Yttria‐Stabilized Zirconia Using Femtosecond Lasers: Challenges and Methodological Insights

Advanced Engineering Materials, EarlyView.
Binder‐free laser powder bed fusion of 8YSZ with a femtosecond laser is used to map process windows linking scan strategy, heat accumulation, and grain growth. Time‐resolved thermography and simulations reveal thermal regimes that enable continuous, vitrified, and fine‐grained 8YSZ surface layers without absorptive additives and demonstrate ...
Markus Kühn, Sarah Kaden, Andrea Barz, Daniel Störzner, Jens Bliedtner, Andrés Fabián Lasagni   +5 more
wiley   +1 more source

Fiber-Laser-Based Ultrasound Sensor for Photoacoustic Imaging

Scientific Reports, 2017
Photoacoustic imaging, especially for intravascular and endoscopic applications, requires ultrasound probes with miniature size and high sensitivity. In this paper, we present a new photoacoustic sensor based on a small-sized fiber laser.
Yi-Zhi Liang, Long Jin, Lidai Wang, Xue Bai, Ling-Hao Cheng, B. Guan   +5 more
semanticscholar   +1 more source

Influence of TiC and TiN Ceramic Reinforcements on the Microstructure, Thermal Expansion Behavior, and Tensile Properties of Invar 36 Manufactured by Laser Powder Bed Fusion

Advanced Engineering Materials, EarlyView.
This study examines Invar composites reinforced with titanium carbide (TiC) and titanium nitride (TiN) using laser powder bed fusion (LPBF). It presents the influence of reinforcements on microstructure, tensile properties, and thermal expansion. Results show that TiC effectively strengthens Invar while maintaining low thermal expansion, whereas TiN ...
Ayodeji Nathaniel Oyedeji, Natasha Sacks, Johannes Pötschke, Björn Matthey   +3 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

Single-mode SOA-based 1kHz-linewidth dual-wavelength random fiber laser.

Optics Express, 2017
Narrow-linewidth multi-wavelength fiber lasers are of significant interests for fiber-optic sensors, spectroscopy, optical communications, and microwave generation.
Yanping Xu, Liang Zhang, Liang Chen, X. Bao   +3 more
semanticscholar   +1 more source

Feasibility and Limitations of the Advanced Replica Process for Bioactive Glasses

Advanced Engineering Materials, EarlyView.
Periodic 3D‐printed Kelvin‐cell templates enable a controlled advanced replica process for fabricating highly porous glass lattices. Across P45K9, 45S5, and 13–93, material‐dependent differences in coating, burnout, and shrinkage lead to distinct strut morphologies, while comparable final porosities of 83%–88% are retained.
Swantje Funk, Elisabeth Keck, Alberto López‐Grande, Delia S. Brauer, Tobias Fey   +4 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

Fiber design for high-power low-cost Yb:Al-doped fiber laser operating at 980nm [PDF]

, 2007
We investigated an Yb:Al-doped depressed-clad hollow optical fiber (DCHOF) for cladding-pumped 980nm laser operation. With a careful design, the nonzero fundamental-mode cutoff characteristics of a DCHOF allows the competing 1030-1060nm emission to be ...
Kim, J., Nilsson, J., Soh, D.B.S., Richardson, D.J., Sahu, J.K.   +4 more
core   +1 more source