Results 21 to 30 of about 540 (169)

Nonreciprocal propagation in a non-Hermitian silicon photonic coupler employing graphene saturable absorption [PDF]

EPJ Web of Conferences, 2020
We present the concept, analysis and design of a nonreciprocal system of coupled nonlinear waveguides, operating at the near infrared. We exploit the spatial asymmetry induced by the exceptional points of a non-Hermitian coupler which, combined with ...
Chatzidimitriou Dimitrios, Pitilakis Alexandros, Yioultsis Traianos, Kriezis Emmanouil   +3 more
doaj   +1 more source

High-Order Mode Mode-Locked Fiber Laser Based on Few-Mode Saturable Absorber

IEEE Photonics Journal, 2021
We presented two kinds of high-order mode (HOM) mode-locked fiber lasers based on few-mode (FM) saturable absorbers for direct HOM oscillation. One is a ring fiber laser based on a carbon nanotube (CNT) saturable absorber (SA), in which the combination ...
Yi Huang, Si Lv, Linping Teng, Longtao Wang, Jiafeng Lu, Jiangtao Xu, Xianglong Zeng   +6 more
doaj   +1 more source

Drop-Casted Self-Assembled Topological Insulator Membrane as an Effective Saturable Absorber for Ultrafast Laser Photonics

IEEE Photonics Journal, 2015
Through employing a cost-effective solvothermal method, ultrathin topological insulator (TI) bismuth telluride (Bi2Te3) nanosheets with uniform hexagonal nanostructures had been synthesized.
Qingkai Wang, Yu Chen, Guobao Jiang, Lili Miao, Chujun Zhao, Xiquan Fu, Shuangchun Wen, Han Zhang   +7 more
doaj   +1 more source

Preparation of Polyphenylene Ring Derivative Dyes with Wide Wave Absorption Properties and Their Performance Study

Molecules, 2022
Some conjugated benzene ring molecules were prepared using the Sonogashira reaction, and the molecules were post-functionally modified using click chemistry.
Yuzhen Zhao, Xinhua Liu, Qing Li, Zhun Guo, Zemin He, Huimin Zhang, Cheng Ma, Jianjing Gao, Yang Zhao, Dong Wang   +9 more
doaj   +1 more source

Oriented zinc oxide nanorods: A novel saturable absorber for lasers in the near-infrared

Beilstein Journal of Nanotechnology, 2018
Zinc oxide (ZnO) nanorods (NRs) oriented along the crystallographic [001] axis are grown by the hydrothermal method on glass substrates. The ZnO NRs exhibit a broadband (1–2 µm) near-IR absorption ascribed to the singly charged zinc vacancy VZn−1.
Pavel Loiko, Tanujjal Bora, Josep Maria Serres, Haohai Yu, Magdalena Aguiló, Francesc Díaz, Uwe Griebner, Valentin Petrov, Xavier Mateos, Joydeep Dutta   +9 more
doaj   +1 more source

Visible-wavelength pulsed lasers with low-dimensional saturable absorbers

Nanophotonics, 2020
The recent renaissance in pulsed lasers operating in the visible spectral region has been driven by their significant applications in a wide range of fields such as display technology, medicine, microscopy, material processing, and scientific research ...
Zou Jinhai, Ruan Qiujun, Zhang Xiaojin, Xu Bin, Cai Zhiping, Luo Zhengqian   +5 more
doaj   +1 more source

Passively Q-switched 2.79-μm Er, Cr: YSGG laser based on pure water saturable absorber

Frontiers in Physics
Exploring suitable saturable absorber materials for the 2.79 μm waveband is always a focus in passive Q-switching laser technology. Pure water exhibits excellent fluidity, high chemical stability, and outstanding thermal properties; notably, its recovery
Yinze Wang, Yinze Wang, Lei Huang, Lei Huang, Haolin Kong, Yueyun Zhang, Tingqing Cheng, Li Wang, Li Wang, Haihe Jiang, Haihe Jiang   +10 more
doaj   +1 more source

Saturable Absorption by Vertically Inserted or Overlaid Monolayer Graphene in Optical Waveguide for All-Optical Switching Circuit

IEEE Photonics Journal, 2013
Optical saturable absorption through a monolayer graphene vertically inserted between fibers and overlaid on an ion-exchanged waveguide was measured for picosecond switching application.
M. Takahashi, W. Ueda, N. Goto, S. Yanagiya   +3 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

164 fs mode-locked erbium-doped fiber laser based on tungsten ditelluride

Nanophotonics, 2020
In recent years, the diversity of transition metal dichalcogenides (TMDs) has made them occupy the essential status in the exploration of saturable absorbing materials.
Liu Mengli, Liu Wenjun, Liu Ximei, Ouyang Yuyi, Wei Zhiyi   +4 more
doaj   +1 more source