Results 131 to 140 of about 1,804,643 (357)

Trace Sulfur‐Doping Boosts NiCo Heterostructured Catalyst for Selective Glycerol‐to‐Formic Acid Electroreforming

Advanced Functional Materials, EarlyView.
A sulfur‐doped Ni–Co heterostructured catalyst is rationally designed to regulate interfacial electronic and adsorption properties for selective glycerol electrooxidation. The synergistic Ni–Co active sites promote hydroxide activation and glycerol adsorption, enabling efficient formic acid production and durable hydrogen generation under continuous ...
Lingqin Shen, Jianchuan Jin, Auttaphon Chachvalvutikul, Ouardia Akdim, Graham J. Hutchings   +4 more
wiley   +1 more source

Suppressing transverse mode instability through multimode excitation in a fiber amplifier. [PDF]

Proc Natl Acad Sci U S A, 2023
Chen CW, Wisal K, Eliezer Y, Stone AD, Cao H.   +4 more
europepmc   +1 more source

100W single mode single polarization picosecond ytterbium doped fibre MOPA frequency doubled to 530nm

, 2009
High average power laser sources operating in the picosecond (ps) regime are useful for a wide range of applications including frequency-doubling and pumping of OPOs.
Lin, Dejiao, Hayes, J., K. K. Chen, Richardson, D.J., Chen, K.K., Malinowski, A., Alam, S.-U., Shaif-ul Alam, D. J. Richardson, D. Lin, J. R. Hayes, A. Malinowski, Hayes, J.R.   +12 more
core   +1 more source

Phase Evolution Kinetics in Additive‐Free 19.75% Organic Photovoltaics Empowered by Solvent Vapor Annealing

Advanced Functional Materials, EarlyView.
Solvent vapor annealing enables kinetic control of additive‐free morphology in organic solar cells. Selective plasticization of acceptor forms an optimal fibrillar network, boosting efficiency to 19.06% (binary) and 19.75% (ternary), with ultrafast exciton dissociation and reduced recombination.
Jie Lv, Jieni Chen, Cenqi Yan, Patrick W. K. Fong, Jingjing Zhao, Daming Zheng, DingQin Hu, Xiaoman Ding, Xiaokang Sun, Chuanlin Gao, Guangye Zhang, Qianguang Yang, Can Zhu, Pei Cheng, Shirong Lu, Zhipeng Kan, Zhiwei Ren, Guangliu Ran, Wenkai Zhang, Hanlin Hu, Gang Li   +20 more
wiley   +1 more source

160 W 800 fs Yb:YAG single crystal fiber amplifier without CPA.

Optics Express, 2015
We demonstrate a compact and simple two-stage Yb:YAG single crystal fiber amplifier which delivers 160 W average power, 800 fs pulses without chirped pulse amplification. This is the highest average power of femtosecond laser based on SCF.
V. Markovic, A. Rohrbacher, P. Hofmann, W. Pallmann, S. Pierrot, B. Resan   +5 more
semanticscholar   +1 more source

High gain and wideband hybrid optical amplifier using bismuth-doped and neodymium-doped fibers for E-band applications

Scientific Reports
A hybrid dual-stage bismuth-doped fiber and neodymium-doped fiber amplifier with high optical gain and extended bandwidth of operation in the E-band is demonstrated.
Aleksandr Donodin, Leily Kiani, Shabnam Noor, Wladek Forysiak   +3 more
doaj   +1 more source

Cylindrical Vector Beams with an MOPA Amplifier Based on Nonlinear Polarization Rotation Mode-Locking

Photonics
CVBs (cylindrical vector beams) are widely used in optical imaging, optical trapping, material processing, etc. In this study, based on mode-selective couplers and passive mode-locking fiber technology, a cylindrical vector fiber amplifier with an MOPA ...
Tianyu Zhang, Dong Li, Siqi Pei, Yun Zhu, Jiapeng Hu, Xuesheng Liu, Anru Yan, Youqiang Liu, Zhiyong Wang   +8 more
doaj   +1 more source

Hierarchical MXene‐Derived NTP/C Nanohybrids for Cryogenic Sodium‐Ion Batteries

Advanced Functional Materials, EarlyView.
A hierarchical MXene‐derived NaTi2(PO4)3/C nanohybrid enables efficient sodium‐ion storage down to −40°C by integrating fast ion–electron transport pathways with an ether‐based electrolyte. The system promotes dominant pseudocapacitive behavior and forms a robust inorganic‐rich SEI, collectively mitigating kinetic and interfacial limitations, thereby ...
M. Sai Bhargava Reddy, Mohammad Zaid, Sayan Das, Sooryadas Sudhakaran, Shampa Aich, Vilas G. Pol   +5 more
wiley   +1 more source

Heavily Tm3+-Doped Silicate Fiber for High-Gain Fiber Amplifiers

Fibers, 2013
We report on investigation the potential of a 7 wt% (8.35 × 1020 Tm3+/cm3) doped silicate fibers for high-gain fiber amplifiers. Such a high ion concentration significantly reduces the required fiber length of high-power 2 μm fiber laser systems and ...
Yin-Wen Lee, Han-Wei Chien, Che-Hung Cho, Ju-Zhe Chen, Juin-Shin Chang, Shibin Jiang   +5 more
doaj   +1 more source

Fiber Residual Stress Effects on Modal Gain Equalization of Few-Mode Fiber Amplifier. [PDF]

Sensors (Basel), 2023
Pei L, Chang Y, Wang J, Zheng J, Ning T, Li J, Bai B, Shen L, Zhong L.   +8 more
europepmc   +1 more source