Results 31 to 40 of about 28,718 (258)

Temporal ghost imaging with random fiber lasers

Optics Express, 2020
Ghost imaging in the time domain has opened up new possibilities to retrieve ultrafast waveforms. A pre-requisite to ghost imaging in the time domain is a light source with random temporal intensity fluctuations that are fully uncorrelated over the duration of the temporal waveform being imaged.
Han Wu, Bing Han, Zinan Wang, Goëry Genty, Guoying Feng, Houkun Liang   +5 more
openaire   +2 more sources

Erbium doped random fiber laser and fiber mixing effect [PDF]

2017 19th International Conference on Transparent Optical Networks (ICTON), 2017
We demonstrate an active random fiber laser by directly pumping a 100 m erbium-doped fiber at 980 nm wavelength, with a fiber loop mirror forming a half-open cavity. Random lasing with competing spectral modes in the range from 1535 nm to 1560 nm is achieved, with the maximum lasing slope efficiency around 10%.
Can Yao, Luc Thevenaz, Camille-Sophie Brès   +2 more
openaire   +1 more source

Full Bandwidth Time-Domain Intensity Statistical Characteristics of Raman Random Fiber Laser Based on a Temporal Dynamics Controllable Pump

Photonics
The temporal dynamics and statistical characteristics of Raman random fiber lasers are of great significance for studying their physical properties and applications.
Zhitao Leng, Mengqiu Fan, Han Wu
doaj   +1 more source

Temporally Stable Random Fiber Laser Operates at 1070 nm

IEEE Photonics Journal, 2015
We experimentally demonstrate a temporally stable random fiber laser (RFL) operating at 1070-nm wavelength. A piece of 25-km passive fiber pumped by a 1018-nm ytterbium-doped fiber laser provides both Raman amplification from stimulated Raman scattering ...
Xueyuan Du, Hanwei Zhang, Hu Xiao, Pu Zhou, Zejin Liu   +4 more
doaj   +1 more source

Wavelength-switchable L-band fiber laser assisted by random reflectors

Journal of the European Optical Society-Rapid Publications, 2023
A wavelength-switchable L-band erbium-doped fiber laser (EDFL) assisted by an artificially controlled backscattering (ACB) fiber reflector is here presented.
Perez-Herrera R.A., Roldan-Varona P., Sanchez-Gonzalez A., Rodriguez-Cobo L., Lopez-Higuera J.M., Lopez-Amo M.   +5 more
doaj   +1 more source

Hybrid electronically addressable random fiber laser

Optics Express, 2020
We report here a novel architecture for a random fiber laser exploiting the combination of a semiconductor optical amplifier (SOA) and an erbium doped fiber (EDF). The EDF was optically biased by a continuous wave pump laser, whereas the SOA was arranged in a fiber loop-mirror and driven by nanosecond duration current pulses. Laser pulses were obtained
Walter, Margulis, Avishek, Das, J P, von der Weid, Anderson S L, Gomes   +3 more
openaire   +2 more sources

1.1–1.6 μm Multi-Wavelength Random Raman Fiber Laser

Photonics, 2023
Multi-wavelength fiber lasers have attracted great attention due to their application value in many fields. In this work, we demonstrated a seven-wavelength random Raman fiber laser in the range of 1.1–1.6 μm. A piece of 1-km-long high Raman gain optical
Chunhua Hu, Ping Sun
doaj   +1 more source

Peripheral lysosomes recruit PLEKHG3 to focal adhesions and restrain protrusion dynamics

FEBS Letters, EarlyView.
Proximity‐dependent labeling at the LAMTOR complex revealed the Rho GEF PLEKHG3 as a lysosome‐proximal protein directing the study toward the influence of lysosome positioning on actin dynamics and cell motility. We show that PLEKHG3 colocalizes with lysosomes at focal adhesion sites and observe that forced peripheral dispersion of lysosomes hinders ...
Rainer Ettelt, Ana‐Maria Sandru, Georg Vucak, Sebastian Didusch, Biljana Riemelmoser, Karin Ehrenreiter, Markus Hartl, Lukas A. Huber, Manuela Baccarini   +8 more
wiley   +1 more source

Thermomechanical Fatigue and Creep–Fatigue Interaction of Inconel 718 Additively Manufactured by Laser Beam Powder Bed Fusion

Advanced Engineering Materials, EarlyView.
Thermomechanical fatigue tests of laser beam powder bed fusion (PBF‐LB) Inconel 718 show that the additively manufactured material reaches almost the lifetimes of conventionally‐rolled material under no‐dwell conditions. Introducing dwell times at the maximum temperature markedly reduces the lifetimes due to pronounced grain boundary sliding associated
Stefan Guth, Tomáš Babinský, Jan Lars Riedel, Wen Hao Kan, Aijun Huang, Martin Heilmaier, Ivo Šulák   +6 more
wiley   +1 more source

Is an Apple an Orange? A Large Language Model Benchmark for Candidate Term Extraction and Subclass Decisions Against Upper Ontologies in Engineering and Materials Science

Advanced Engineering Materials, EarlyView.
Building machine‐readable vocabularies for materials science is slow, expert‐driven work. This study benchmarks 13 large language models on two of its first steps: finding candidate terms in engineering articles and deciding where they belong in a class hierarchy.
Thomas Bjarsch, Maximilian Holland, Klaus Drechsler, Johannes Schilp   +3 more
wiley   +1 more source