Results 81 to 90 of about 29,139 (290)

InGaAs/GaAs metamorphic buffer for laser power converter applications

Optics Express
This paper investigated the optimization of InGaAs/GaAs metamorphic buffer and its application to LPCs (laser power converters). Firstly, InGaAs (18%) metamorphic buffer with step (S), step + overshoot (SO), step + reverse (SR), and step + reverse + overshoot (SRO) structures were investigated by X-ray, AFM and TEM, respectively.
Huadong Pan, Jun Wang, Xiangliu Chen, Yongji Chen, Zhiqiang Mou, Huomu Yang, Guoliang Deng, Yudan Gou   +7 more
openaire   +2 more sources

Narrow line width frequency comb source based on an injection-locked III–V-on-silicon mode-locked laser [PDF]

, 2016
In this paper, we report the optical injection locking of an L-band (similar to 1580 nm) 4.7 GHz III-V-on-silicon mode-locked laser with a narrow line width continuous wave (CW) source. This technique allows us to reduce the MHz optical line width of the
Duan, Guang-Hua, Keyvaninia, Shahram, Kuyken, Bart, Lelarge, Francois, Roelkens, Günther, Uvin, Sarah   +5 more
core   +1 more source

Thermophysical Properties of the Desulphurization Slags With Various CaS and CaO/Al2O3 Ratio

Advanced Engineering Materials, EarlyView.
This article investigates how CaS content and the CaO/Al2O3 ratio influence the thermophysical properties of desulphurization slags. Using experimental measurements and thermodynamic simulations, this study reveals complex effects on viscosity, surface tension, and density, providing new insight into slag structure and phase behavior under ...
Eldar Salpagarov, Matheus Roberto Bellé, Anton Yehorov, Julia Richter, Olena Volkova   +4 more
wiley   +1 more source

A reflective sapphire@PiGF@alumina color converter enabling ultrahigh luminescence laser-driven white lighting

Journal of Advanced Ceramics
High-brightness laser lighting faces grave challenges in the development of laser-driven color converters that simultaneously possess excellent optical performance and superior heat dissipation.
Xinyuan Wang, Jingxiang Qu, Hongjin Zhang, Deyi Chen, Ben Tian, Yun Mou, Jianming Xu, Yang Peng   +7 more
doaj   +1 more source

Low-Complexity Time-Domain Averaging-Based DAC Clock Tone Leakage Compensation for Short-Reach PAM4 Transmission

IEEE Photonics Journal, 2020
High sampling-rate digital-to-analog converters (DAC) are usually applied in optical fiber communication systems for the signal generation with advanced modulation formats such as four-level pulse amplitude modulation (PAM4).
Ming Chen, Long Zhang, Hui Zhou, Qinghui Chen   +3 more
doaj   +1 more source

Mathematical modeling of a photovoltaic-laser energy converter for iodine laser radiation [PDF]

Space-based laser power systems will require converters to change laser radiation into electricity. Vertical junction photovoltaic converters are promising devices for this use.
Heinbockel, John H., Walker, Gilbert H.
core   +1 more source

The small wind turbine field lab extensive field tests for small wind turbines [PDF]

, 2013
This paper describes the research possibilities at the Small Wind Turbine Field Lab and the involved research groups of Ghent University, covering different aspects of a small wind energy system. In contrast to large and medium-sized wind turbines, small
Botteldooren, Dick, De Kooning, Jeroen, De Maeyer, Jeroen, Laveyne, Joannes, Sergeant, Peter, Stockman, Kurt, Van Eetvelde, Greet, Van Paepegem, Wim, Van Wyngene, Karel, Vandevelde, Lieven   +9 more
core  

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

Laser-driven composite ceramic enabling superhigh-luminance white light

Journal of Materiomics
Laser-remote activated phosphor (LARP) converted solid state lighting is now developing towards high power density and super-brightness, and phosphor ceramic converters with high efficiency, high thermal conductivity, acceptable transmittance and ...
Rundong Tian, Tianliang Zhou, Rong-Jun Xie   +2 more
doaj   +1 more source

Broadband white light emission from Ce:AlN ceramics: High thermal conductivity down-converters for LED and laser-driven solid state lighting

APL Materials, 2016
We introduce high thermal conductivity aluminum nitride (AlN) as a transparent ceramic host for Ce3+, a well-known active ion dopant. We show that the Ce:AlN ceramics have overlapping photoluminescent (PL) emission peaks that cover almost the entire ...
A. T. Wieg, E. H. Penilla, C. L. Hardin, Y. Kodera, J. E. Garay   +4 more
doaj   +1 more source