Results 81 to 90 of about 119,729 (285)

Optically active nanoparticles-embedded optical fiber for random fiber laser distributed sensor [PDF]

APL Photonics
This paper presents the development of a multifunctional photonic device using nanoparticle (NP)-doped fiber as an optical amplification medium and distributed sensing element simultaneously.
A. Leal-Junior, S. Kepak, E. Pedruzzi, J. Nedoma, R. Martinek, W. Blanc   +5 more
doaj   +1 more source

The GRAVITY metrology system: modeling a metrology in optical fibers

, 2014
GRAVITY is the second generation VLT Interferometer (VLTI) instrument for high-precision narrow-angle astrometry and phase-referenced interferometric imaging.
Amorim, A., Blind, N., Brandner, W., Burtscher, L., Eisenhauer, F., Gillessen, S., Hans, O., Haug, M., Haussmann, F., Huber, H., Huber, S., Janssen, A., Kellner, S., Kok, Y., Lippa, M., Ott, T., Perraut, K., Perrin, G., Pfuhl, O., Straubmeier, C., Sturm, E., Weber, J., Wieprecht, E.   +22 more
core   +1 more source

Optoelectronic Synaptic Devices Using Molecular Telluride Phase‐Change Inks for Three‐Factor Learning

Advanced Functional Materials, EarlyView.
Optoelectronic synaptic devices based on solution‐processed molecular telluride GST‐225 phase‐change inks are demonstrated for three‐factor learning. A global optical signal broadcast through a silicon waveguide induces non‐volatile conductance updates exclusively in locally electrically flagged memristors.
Kevin Portner, Dhananjeya Kumaar, Giacomo Torti, Killian Keller, Till Zellweger, Florian M. Schenk, Christoph Weilenmann, Daniel Chelladurai, Vara Prasad Jonnalagadda, Ghazi Sarwat Syed, Vanessa Wood, Jürg Leuthold, Alexandros Emboras, Maksym Yarema, Mathieu Luisier   +14 more
wiley   +1 more source

High-order-mode Brillouin random fiber laser based on distributed Rayleigh scattering in all-few mode fiber half-open cavity

Results in Physics
A high-order-mode (HOM) Brillouin random fiber laser (BRFL) based on distributed Rayleigh scattering in an all-few-mode fiber random cavity is proposed and experimentally demonstrated.
Zizhou Wei, Liang Zhang, Yichun Li, Wei Chen, Han Wang, Mengshi Zhu, Xianglong Zeng, Fufei Pang, Tingyun Wang   +8 more
doaj   +1 more source

High Power, High-Order Random Raman Fiber Laser Based on Tapered Fiber

IEEE Photonics Journal, 2017
In this paper, we demonstrate a high power and high-order random Raman fiber laser based on a 1 km novel tapered fiber (TF). The core diameter of the TF gradually increases from 8 μm to 20  μm.
Zhaokai Lou, Xiaoxi Jin, Hanwei Zhang, Pu Zhou, Zejin Liu   +4 more
doaj   +1 more source

High-power low spatial coherence random fiber laser [PDF]

Optics Express, 2019
A high-power multi-transverse modes random fiber laser (RFL) is investigated by combining a master oscillator power-amplifier (MOPA) configuration with a segment of extra-large mode area step-index multimode fiber (MMF). Spatial coherence of the high-power multi-transverse modes RFL has been analyzed, which shows that speckle contrast is reduced ...
Rui Ma, Jia Qi Li, Jia Yu Guo, Han Wu, Hua Hui Zhang, Bo Hu, Yun Jiang Rao, Wei Li Zhang   +7 more
openaire   +2 more sources

Correlation steering in the angularly multimode Raman atomic memory

, 2016
We present the possibility of steering the direction of correlations between the off-resonant Raman scattered photons from the angularly multimode atomic memory based on warm rubidium vapors.
Dąbrowski, Michał, Mazelanik, Mateusz, Wasilewski, Wojciech   +2 more
core   +1 more source

Photon Avalanching Nanoparticles: The Next Generation of Upconverting Nanomaterials?

Advanced Functional Materials, EarlyView.
This Perspective outlines the mechanistic foundations that enable photon‐avalanche (PA) behavior in lanthanide nanomaterials and contrasts them with emerging application spaces and forward‐looking design strategies. By bridging threshold engineering, energy‐transfer dynamics, and materials engineering, we provide a coherent roadmap for advancing the ...
Kimoon Lee, Yunseo Kim, Hyeong‐ku Jo, Dongjoon Yoon, Byeonghyeok Im, WonJeong Yu, Eui‐Rim On, Changhwan Lee   +7 more
wiley   +1 more source

Second-harmonic generation within a random fiber laser

High Power Laser Science and Engineering
Optical fibers offer convenient access to a variety of nonlinear phenomena. However, due to their inversion symmetry, second-order nonlinear effects, such as second-harmonic generation (SHG), are challenging to achieve.
Yousi Yang, Dan Li, Pei Li, Guohao Fu, Tiancheng Qi, Yijie Zhang, Ping Yan, Mali Gong, Qirong Xiao   +8 more
doaj   +1 more source

Receptor‐Free Identification of Toxic Gases Enabled by Hygroscopic Aqueous Salt Films

Advanced Functional Materials, EarlyView.
Water as a gas sensor coating sounds impossible—until it stops evaporating. Here, hygroscopic salt solutions (LiCl, LiBr, H3PO4) form non‐drying aqueous films on CNT chemiresistors under ambient air. Gases partition into these liquid layers, sometimes transforming into water, and generate salt‐specific resistance fingerprints across a four‐channel ...
Seongwoo Lee, Yun‐Tae Kim, Hwarang Choi, Sanghwan Park, Seongyeop Lim, Chang Young Lee   +5 more
wiley   +1 more source