Results 41 to 50 of about 2,049 (291)

Development and saturation investigation of MALO saturable absorber

Przeglad Elektrotechniczny, 2014
The paper describes the investigation of saturation effect in newly developed MgAl2O4:Co saturable absorber with the aim of thermally bounding it with the active media such as erbium glasses. On the basis of the experimental results the most important parameters, from the point of view of laser generation, such as ground state absorption cross section,
Jarosław, Młyńczak, Krzysztof, Kopczyński, Jadwiga, Mierczyk   +2 more
openaire   +1 more source

Characterization of the nonlinear optical properties of Zn and Ag nanoparticles using light at 1550 nm

Results in Optics
Nonlinear optical properties of metallic and oxide metallic nanoparticles have been extensively studied as saturable absorbers in fiber-optic lasers in the infrared region for the generation of short and/or ultrashort pulses.
A. Guzmán-Barraza, J.G. Ortega-Mendoza, A. Padilla-Vivanco, M.L. Arroyo Carrasco, N.R. Silva-González, P. Zaca-Morán, E.V. García Ramírez   +6 more
doaj   +1 more source

Slow light in saturable absorbers [PDF]

Physical Review A, 2008
In connection with the experiments recently achieved on doped crystals, biological samples, doped optical fibers and semiconductor heterostructures, we revisit the theory of the propagation of a pulse-modulated light in a saturable absorber. Explicit analytical expressions of the transmitted pulse are obtained, enabling us to determine the parameters ...
Macke, Bruno, Ségard, Bernard
openaire   +2 more sources

The (Glg)ABCs of cyanobacteria: modelling of glycogen synthesis and functional divergence of glycogen synthases in Synechocystis sp. PCC 6803

FEBS Letters, EarlyView.
We reconstituted Synechocystis glycogen synthesis in vitro from purified enzymes and showed that two GlgA isoenzymes produce glycogen with different architectures: GlgA1 yields denser, highly branched glycogen, whereas GlgA2 synthesizes longer, less‐branched chains.
Kenric Lee, Dimitrios Bekiari, Sofia Doello, Karl Forchhammer   +3 more
wiley   +1 more source

High Modulation Depth Enabled by Mo₂Ti₂C₃T_x MXene for Q-Switched Pulse Generation in a Mid-Infrared Fiber Laser

Nanomaterials, 2022
Two-dimensional (2D) materials show great promise as saturable absorbers (SAs) for ultrafast fiber lasers. However, the relatively low modulation depth and poor stability of some 2D materials, such as graphene and black phosphorus, restrict their ...
Xin Guo, Shuai Wang, Peiguang Yan, Jinzhang Wang, Linpeng Yu, Wenjun Liu, Zhijian Zheng, Chunyu Guo, Shuangchen Ruan   +8 more
doaj   +1 more source

Gut microbiome and aging—A dynamic interplay of microbes, metabolites, and the immune system

FEBS Letters, EarlyView.
Age‐dependent shifts in microbial communities engender shifts in microbial metabolite profiles. These in turn drive shifts in barrier surface permeability of the gut and brain and induce immune activation. When paired with preexisting age‐related chronic inflammation this increases the risk of neuroinflammation and neurodegenerative diseases.
Aaron Mehl, Eran Blacher
wiley   +1 more source

Passive Q-Switching of a Diode-Pumped Pr:LiYF₄ Visible Laser Using WS₂ as Saturable Absorber

IEEE Photonics Journal, 2016
Q-switched laser operation of a blue-diode-pumped Pr:LiYF4 laser is demonstrated at 640 nm for the first time by using a tungsten disulfide (WS2) nanosheet material as a saturable absorber.
Yongjie Cheng, Jian Peng, Bin Xu, Han Yang, Zhengqian Luo, Huiying Xu, Zhiping Cai, Jian Weng   +7 more
doaj   +1 more source

A novel quinazolinone insulin receptor inhibitor and its synergy with an EGFR inhibitor in glucose‐driven glioblastoma

Molecular Oncology, EarlyView.
The novel styrylquinazolinone‐based molecule W1B effectively suppresses glioblastoma by inhibiting IGF1R and EGFR. In high‐glucose microenvironments driving tumor resistance, W1B acts synergistically with the EGFR inhibitor dacomitinib. This combination safely blocks compensatory survival signaling in zebrafish xenograft models. Showcasing promising in
Patryk Rurka, Wioleta Cieślik, Wojciech Płaziński, Katarzyna Stępnik, Anna Boguszewska‐Czubara, Elżbieta Kot, Robert Musioł, Mateusz Jasica, Anna Mrozek‐Wilczkiewicz, Katarzyna Malarz   +9 more
wiley   +1 more source

Exploiting nonlinear properties of pure and Sn-doped Bi2Te2Se for passive Q-switching of all-polarization maintaining ytterbium- and erbium-doped fiber lasers

Scientific Reports, 2017
Due to their broadband nonlinear optical properties, low-dimensional materials are widely used for pulse generation in fiber and solid-state lasers. Here we demonstrate novel materials, Bi2Te2Se (BTS) and Sn-doped Bi2Te2Se (BSTS), which can be used as a ...
Jakub Bogusławski, Maciej Kowalczyk, Przemysław Iwanowski, Andrzej Hruban, Ryszard Diduszko, Kazimierz Piotrowski, Krzysztof Dybko, Tomasz Wojciechowski, Marta Aleszkiewicz, Jarosław Sotor   +9 more
doaj   +1 more source

All-Fiber Saturable Absorbers for Ultrafast Fiber Lasers

IEEE Photonics Journal, 2019
The past decade has witnessed tremendous achievements of ultrafast fiber laser technologies due to rapid developments of saturable absorbers (SAs) based on, in particular, nanomaterials such as 0D quantum dot, 1D carbon nanotubes, 2D layered materials ...
Wei Zhao, Guangwei Chen, Wenlei Li, Guomei Wang, Chao Zeng   +4 more
doaj   +1 more source