Results 51 to 60 of about 26,044 (311)

Saturable absorption in multicore fiber couplers [PDF]

Journal of the Optical Society of America B, 2013
The saturable absorption characteristics of two-, three-, and five-core one-dimensional fiber coupler arrays and the seven-core hexagonal fiber coupler array are investigated. It is shown that the performance of all these saturable absorbers are comparable and not much is gained, if anything, by going from a two-core nonlinear coupler geometry to a ...
Nazemosadat, Elham, Mafi, Arash
openaire   +2 more sources

Intensity-Dependent Enhancement of Saturable Absorption in PbS-Au4 Nanohybrid Composites: Evidence for Resonant Energy Transfer by Auger Recombination

, 2008
Intensity-dependent enhancement of saturable absorption in a film of PbS-Au4 nanohybrid composites has been observed by femtosecond time-resolved transient absorption measurement at 780 nm.
Hendry I. Elim, Jian Yang, Jim Yang Lee, Shi W., Wei Ji   +4 more
core   +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

Multilayer black phosphorus as broadband saturable absorber for pulsed lasers from 1 to 2.7 {\mu}m wavelength

, 2015
It attracts wide interest to seek universe saturable absorber covering wavelengths from near infrared to mid-infrared band. Multilayer black phosphorus, with variable direct bandgap (0.3-2 eV) depending on the layer number, becomes a good alternative as ...
Guo, Zhinan, Kong, Lingchen, Qian, Liejia, Qin, Zhipeng, Xie, Guoqiang, Yuan, Peng, Zhang, Han   +6 more
core   +1 more source

Function‐driven design of a surrogate interleukin‐2 receptor ligand

FEBS Letters, EarlyView.
Interleukin (IL)‐2 signaling can be achieved and precisely fine‐tuned through the affinity, distance, and orientation of the heterodimeric receptors with their ligands. We designed a biased IL‐2 surrogate ligand that selectively promotes effector T and natural killer cell activation and differentiation. Interleukin (IL) receptors play a pivotal role in
Ziwei Tang, Zelin Cheng, Teng Li, Fulian Wang, Liangminghui Zhang, Xiuxiu He, Lili Liu, Wei Wang, Aibin Liang, Guang Yang   +9 more
wiley   +1 more source

Tunable optical nonlinearity of indium tin oxide for optical switching in epsilon-near-zero region

Nanophotonics, 2022
The propagation of light in the epsilon-near-zero (ENZ) region of materials exhibits intriguing linear and nonlinear optical phenomenon that have been extensively exploited for a plethora of applications. Here, we show that the optical properties as well
Lau Kuen Yao, Yang Yuting, Zhao Di, Liu Xiaofeng, Qiu Jianrong   +4 more
doaj   +1 more source

Nonlinear Optical Response of Gold Nanobipyramids for a Doubly Q-Switched Ho-Doped Laser at a Wavelength of 2.1 µm

Nanomaterials, 2021
Gold nanobipyramids (Au-NBPs) were successfully fabricated using the seed-mediated growth method. The saturable absorption performance of the Au-NBPs at a 2-μm band wavelength was characterized. Using excellent-quality, mature Ho:YLF crystals, a doubly Q-
Cheng Zhang, Dongzhou Wang, Shengjun Huang, Jimin Yang, Jie Liu, Jing Fang   +5 more
doaj   +1 more source

Inhibiting stearoyl‐CoA desaturase suppresses bone metastatic prostate cancer by modulating cellular stress, mTOR signaling, and DNA damage response

FEBS Letters, EarlyView.
Bone metastasis in prostate cancer (PCa) patients is a clinical hurdle due to the poor understanding of the supportive bone microenvironment. Here, we identify stearoyl‐CoA desaturase (SCD) as a tumor‐promoting enzyme and potential therapeutic target in bone metastatic PCa.
Alexis Wilson, Mackenzie K Herroon, Shane Mecca, Laimar C Garmo, Jacob Lindquist, Shrila Rajendran, Steve M. Patrick, Izabela Podgorski   +7 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

Self-Pulsating Semiconductor Lasers: Theory and Experiment [PDF]

, 1999
We report detailed measurements of the pump-current dependency of the self-pulsating frequency of semiconductor CD lasers. A distinct kink in this dependence is found and explained using rate-equation model. The kink denotes a transition between a region
Elsasser, W., Hernandez-Garcia, E., Landais, P., Lenstra, D., Lynch, S., Miguel, M. San, Mirasso, C. R., O'Gorman, J., Phelan, P., van Tartwijk, G. H. M.   +9 more
core   +6 more sources