Results 41 to 50 of about 382,937 (283)

All-optical adaptive control of quantum cascade random lasers

Nature Communications, 2020
Tunable quantum cascade lasers can enable applications in multiple areas. Here, the authors demonstrate the adaptive control of the modes and emission spectra of quantum cascade random lasers through a spatially-tailored optical modulation of the active ...
S. Schönhuber, N. Bachelard, B. Limbacher, M. A. Kainz, A. M. Andrews, H. Detz, G. Strasser, J. Darmo, S. Rotter, K. Unterrainer   +9 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

Semiconductor Laser with Electrically Modulated Frequency

Photonics
We propose a novel method for controlling the frequency of semiconductor lasers. This technique facilitates the production of devices with fast frequency tuning and intrinsic linearization of laser frequency sweeps.
Boris Laikhtman, Gregory Belenky, Sergey Suchalkin   +2 more
doaj   +1 more source

Tunable Brillouin and Raman microlasers using hybrid microbottle resonators

Nanophotonics, 2019
We realized a tunable Brillouin laser and a tunable Raman laser by using ultrahigh-quality-factor (Q) hybrid microbottle resonators. The whispering-gallery-mode microresonator-based Brillouin and Raman lasers possess unique advantages (e.g. low threshold,
Zhu Song, Xiao Bowen, Jiang Bo, Shi Lei, Zhang Xinliang   +4 more
doaj   +1 more source

Tailorable Stimulated Brillouin Scattering Laser Based on Silicon Ring Waveguides

Frontiers in Physics, 2021
Stimulated Brillouin scattering (SBS) lasers based on silicon waveguides with large SBS gain, have been widely used in frequency tunable laser emission, mode-locked pulse laser, low-noise oscillator, optical gyroscope, and other fields.
Yulei Wang, Yulei Wang, Kai Li, Kai Li, Yu Yu, Yu Yu, Yu Yu, Sensen Li, Yunfei Li, Yunfei Li, Wuyue Wang, Wuyue Wang, Changyu Song, Changyu Song, Zhiyong Wang, Zhiyong Wang, Gong Wang, Gong Wang, Yong Zhang, Yong Zhang, Zhiwei Lu, Zhiwei Lu, Yuhai Li, Tongyu Liu, Xiusheng Yan   +24 more
doaj   +1 more source

Fast tunable lasers in radio-over-fiber access networks [PDF]

, 2006
The authors present a novel concept of employing optical wavelength packet switching (WPS) in radio-over-fiber (RoF) access networks. The Central Station is equipped with a fast tunable laser (TL), which is externally modulated with a data signal ...
Barry, Liam P., A. Kaszubowska-Anandarajah, E. Connolly, Kaszubowska-Anandarajah, Aleksandra, McDonald, David, Connolly, Eoin M., L. Barry, D. McDonald   +7 more
core   +2 more sources

High‐Resolution Corrosion Fingerprinting of Alloy Libraries via Microdroplet Spectroelectrochemistry

Advanced Engineering Materials, EarlyView.
Ionic‐liquid microdroplet spectroelectrochemistry enables stable, localized electrochemical measurements over extended timescales. By coupling impedance spectroscopy, wetting analysis, finite‐element simulations, and operando Raman spectroscopy, it disentangles geometrical and electrochemical effects, opening new opportunities for rapid corrosion ...
Ekaterina Kurchavova, Oumaïma Gharbi, Mireille Turmine, Vincent Vivier   +3 more
wiley   +1 more source

Optically Integrated InP–Si$_3$ N$_4$ Hybrid Laser

IEEE Photonics Journal, 2016
We describe the first demonstration and characterization of an optically integrated InP–Si $_3$N$_4$ hybrid laser. The laser is formed by integration of an InP-based reflective semiconductor optical amplifier with a Si$_3$N $_4$ based feedback ...
Youwen Fan, Jorn P. Epping, Ruud M. Oldenbeuving, Chris G. H. Roeloffzen, Marcel Hoekman, Ronald Dekker, Rene G. Heideman, Peter J. M. van der Slot, Klaus-J. Boller   +8 more
doaj   +1 more source

Microstructure Modification of Additively Manufactured Mo–9Si–8B by Annealing and Its Effects on High‐Temperature Mechanical Properties

Advanced Engineering Materials, EarlyView.
Postbuild annealing systematically modifies the phase fractions and morphology of EB‐PBF processed Mo–9Si–8B. Quantitative microstructure–property correlations reveal how controlled phase evolution enhances high‐temperature compressive strength and creep resistance.
Christopher Schmidt, Yong Chen, Georg Hasemann, Benjamin Wahlmann, Carolin Körner, Manja Krüger   +5 more
wiley   +1 more source

Adaptive Foam 3D Printing of Ultralight and Multifunctional Materials

Advanced Engineering Materials, EarlyView.
Adaptive foam 3D printing, enabled by expandable microspheres, imparts cellular structures to thermoplastic and thermosetting polymers, manufactured through a variety of processes including fused filament fabrication, direct ink writing, digital light processing, and inkjet printing.
Nariman Rajabifar, Amir Ameli
wiley   +1 more source