Results 41 to 50 of about 318,441 (330)

Efficient single photon source based on μ-fibre-coupled tunable microcavity

, 2015
This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIP) (20070093863, 2014M3C1A3052537).Efficient and fast on-demand single photon sources have been sought after as critical components of ...
Lee, Chang-Min, Höfling, Sven, Lim, Hee-Jin, Maier, Sebastian, Schneider, C., Lee, Y.-H., Lee, C.-M., Schneider, Christian, Maier, S., Lee, Yong-Hee, Kamp, M., Kamp, Martin, Lim, H.-J.   +12 more
core   +1 more source

Innovative Processing of Compacted Waste Aluminum Alloy Powders via Controlled Remelting and Solidification

Advanced Engineering Materials, EarlyView.
This study demonstrates an efficient recycling route for out‐of‐spec AlSi10Mg atomized powders through compaction and arc remelting followed by suction casting. By correlating compaction load, cooling rate, and resulting microstructure, we show that intermediate pressures (50–80 kN) and rapid cooling refine dendrites, reduce porosity, and enhance ...
Mila Christy de Oliveira, Marcella Gaute Cavalcante Xavier, Abdoul‐Aziz Bogno, Piter Gargarella, José Eduardo Spinelli   +4 more
wiley   +1 more source

Direct Side Pumping of Double-Clad Fiber Laser by Laser Diode Array Through the Use of Subwavelength Grating Coupler

IEEE Photonics Journal, 2012
An electron-beam-fabricated subwavelength grating coupler for direct side coupling of light emission from a high-power laser diode array (LDA) was studied theoretically and implemented experimentally.
C. W. Huang, C. L. Chang, D. Y. Jheng, K. Y. Hsu, S. L. Huang, D. W. Huang   +5 more
doaj   +1 more source

Review of long period fiber gratings written by CO₂ laser

, 2010
This paper presents a systematic review of long period fiber gratings (LPFGs) written by the CO2 laser irradiation technique. First, various fabrication techniques based on CO2 laser irradiations are demonstrated to write LPFGs in different types of ...
Yiping Wang, Wang, Yiping
core   +1 more source

Fiber coupling efficiency for a Gaussian-beam wave propagating through non-Kolmogorov turbulence.

Optics Express, 2015
Nowadays it has been accepted that the Kolmogorov model is not the only possible turbulent one in the atmosphere, which has been confirmed by the increasing experimental evidence and some results of theoretical investigation.
Chao Zhai, L. Tan, Siyuan Yu, Jing Ma
semanticscholar   +1 more source

A Numerical–Experimental Approach for Multi‐Matrix Fiber‐Reinforced Plastics Characterization Using Finite Element Model Updating

Advanced Engineering Materials, EarlyView.
A numerical–experimental framework is developed for characterizing multi‐matrix fiber‐reinforced polymers (MM‐FRPs) combining epoxy and polyurethane matrices. Harmonic bending tests are integrated with finite element model updating (FEMU) to simultaneously identify elastic and viscoelastic material parameters.
Rodrigo M. Dartora, Tales V. Lisbôa, Axel Spickenheuer, Rogério J. Marczak, Jakson M. Vassoler   +4 more
wiley   +1 more source

Utilizing a GeO2 optical fiber for a 2.79 μm Er:LuYSGG CW laser transmission

Results in Optics
We demonstrate the transmission of 2.79 μm continuous-wave (CW) Er:LuYSGG laser energy with a high coupling efficiency by a GeO2 fiber for the first time.
Kunpeng Dong, Dunlu Sun, Huili Zhang, Jianqiao Luo, Cong Quan, Yuwei Chen, Zhentao Wang, Hongyuan Li, Maojie Cheng   +8 more
doaj   +1 more source

Extremely Efficient DFB Lasers with Flat-Top Intra-Cavity Power Distribution in Highly Erbium-Doped Fibers

Sensors, 2023
High-performance erbium-doped DFB fiber lasers are presently required for several sensing applications, whilst the current efficiency record is only a few percent.
Amirhossein Tehranchi, Raman Kashyap
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

The Influence of Oceanic Turbulence on Fiber-Coupling Efficiency of Multi-Gaussian Shell-Mode Beams for Underwater Optical Communications

Photonics
This study theoretically investigates the coupling efficiency of multi-Gaussian Shell-mode (MGSM) beams in ocean turbulence. The expression for the fiber-coupling efficiency of the MGSM beams propagating through oceanic turbulent media is derived using ...
Xiaonan Jing, Shan Lv, Jiqian Zhang, Hui Zhang, Yaru Gao, Yangsheng Yuan, Yangjian Cai, Dongmei Wei   +7 more
doaj   +1 more source