Results 51 to 60 of about 13,277 (292)

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

Broader, flatter optical spectra of passively mode-locked semiconductor lasers for a wavelength-division multiplexing source [PDF]

, 1997
Using the time domain master equation for a complex electric-field pulse envelope, we find analytical results for the optical spectra of passively mode-locked semiconductor lasers. The analysis includes the effect of optical nonlinearity of semiconductor
Eliyahu, Danny, Salvatore, Randal A., Yariv, Amnon   +2 more
core   +1 more source

Mid-Infrared Dual-Wavelength Passively Q-Switched Er: SrF₂ Laser by CsPbCl₃ Quantum Dots Absorber

Crystals, 2022
A passively Q-switched compact dual-wavelength Er: SrF2 laser, operating at a 2729.73 nm and 2747.2 nm wavelength, was demonstrated by utilizing CsPbCl3 quantum dots (QDs) as a saturable absorber (SA).
Leilei Guo, Maorong Wang, Yifan Zhang, Shuaiyi Zhang, Kai Zhong, Qiuling Zhao, Lihua Teng, Xia Wang, Jianquan Yao   +8 more
doaj   +1 more source

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

Physical vapor deposition of large-scale PbSe films and its applications in pulsed fiber lasers

Nanophotonics, 2019
Lead selenide (PbSe) is a new emerging semiconductor with layer-dependent bandgap that has attracted much interest due to its high infrared response and good environmental stability.
Gao Qun, Yang Hao, Hu Cuichen, He Zhiwen, Lu Hua, Zhang Wending, Mao Dong, Mei Ting, Zhao Jianlin   +8 more
doaj   +1 more source

Incoherent "Slow and Fast Light"

, 2009
We show experimentally that the effects of "slow and fast light" that are considered to be caused by spectral hole-burning under conditions of coherent population oscillations (CPO) can be universally observed with incoherent light fields on objects with
Aleksandrov, Bigelow, Bigelow, Gleb Kozlov, Hercher, Ku, Macke, Mocker, Schwarz, Selden, Valerii Zapasskii, Zapasskii, Zapasskii   +12 more
core   +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

Passively Q-Switched Thulium-Doped Fiber Laser Employing a Glycerin-Based Saturable Absorber

Fibers
A passively Q-switched Thulium-doped fiber laser based on glycerin as the saturable absorber is experimentally demonstrated for the first time. The saturable absorber consists of two FC/PC connectors aligned within a mechanical fiber-fiber coupler, with ...
Edwin Addiel Espinosa-De-La-Cruz, Manuel Durán-Sánchez, Ulises Alcántara-Bautista, Alejandro Reyes-Mora, Adalid Ibarra-Garrido, Ivan Armas-Rivera, Luis Alberto Rodríguez-Morales, Miguel Bello-Jiménez, Baldemar Ibarra-Escamilla   +8 more
doaj   +1 more source

Nonlinear Stabilization of High-Energy and Ultrashort Pulses in Passively Modelocked Lasers with Fast Saturable Absorption

, 2016
The two most commonly used models for passively modelocked lasers with fast saturable absorbers are the Haus modelocking equation (HME) and the cubic-quintic modelocking equation (CQME).
Marks, Brian S., Menyuk, Curtis R., Wang, Shaokang   +2 more
core   +1 more source

Establishing an assay to evaluate d‐amino acid oxidase enzyme kinetics and inhibition using WST‐8 redox dye

FEBS Open Bio, EarlyView.
This study investigated a novel WST‐8‐based assay for evaluating d‐Amino acid oxidase (DAO) inhibitors. We confirmed its effectiveness using known inhibitors and found that uremic toxins possess relatively weak inhibitory activity compared to existing drugs.
Kahoko Miyake, Yuki Enoki, Yuka Nakazawa, Kazuaki Taguchi, Kazuaki Matsumoto   +4 more
wiley   +1 more source