Results 41 to 50 of about 1,463 (263)

Scaling of the saturation energy in microcavity saturable absorber devices [PDF]

Applied Physics Letters, 2006
Several all-optical switching devices based on quantum well microcavity structures have been studied in view of their possible use for all-optical regeneration of telecommunication signals. Experiments and modeling show that the saturation energy is inversely proportional to a scaling factor describing the enhancement of the intracavity intensity at ...
Massoubre, David, Shen, A., Decobert, J., Dion, J., Harmand, J.C., Landreau, J., Oudar, J.L.   +6 more
openaire   +3 more sources

One size does not fit all: An in vitro evaluation of the effects of bezafibrate and medroxyprogesterone acetate on human SH‐SY5Y and U‐87 MG cancer cells

FEBS Open Bio, EarlyView.
Drugs previously repurposed to target blood cancers reduced neuroblastoma and glioblastoma cell growth and viability. However, their levels of anticancer activity were different and their clinical application may be problematic due to side effects at effective doses.
Abhishek Kharawatkar, Francesco Michelangeli, Farhat Latif Khanim, Christopher Martin Bunce, William Eustace Basil Johnson   +4 more
wiley   +1 more source

All-fibre mode-locked laser using SMF-GIMF-SMF structure as artificial saturable absorber

Results in Optics
In this work, we proposed and experimentally demonstrated a combination of single mode fibre (SMF) with graded indexed multimode fibre (GIMF) to form an artificial saturable absorber. A SMF-GIMF-SMF structure is incorporated into Erbium-doped fibre laser
Yu Chen, Zian Cheak Tiu, Ahmad Haziq A. Rosol, Sin Jin Tan, Kaharudin Dimyati, Sulaiman Wadi Harun   +5 more
doaj   +1 more source

PMMA Sandwiched Bi2Te3 Layer as a Saturable Absorber in Mode-Locked Fiber Laser

Advances in Condensed Matter Physics, 2018
In this paper, we fabricated a PMMA sandwiched Bi2Te3 self-assembly layer as a saturable absorber device, which was used as a passive mode locker for ultrafast pulse generation at the telecommunication band.
Guobao Jiang, Yuan Zhou, Lulu Wang, Ying Chen   +3 more
doaj   +1 more source

Passively Q-Switched Nd:YAG Laser With Graphene Oxide in Heavy Water

IEEE Photonics Journal, 2014
Liquid saturable absorbers have some advantages in some aspects over solid saturable absorbers. In this paper, graphene oxide in heavy water (deuteroxide, D2O) dispersion was fabricated and used as absorber in Q-switched Nd:YAG laser for the first time ...
Qiao Wen, XiaoJun Zhang, YongGang Wang, YiShan Wang, HanBen Niu   +4 more
doaj   +1 more source

Spatio-temporal extreme events in a laser with saturable absorber [PDF]

2015 Spatiotemporal Complexity in Nonlinear Optics (SCNO), 2015
We study extreme events occurring in the transverse $(x,y)$ section of the field emitted by a broad-area semiconductor laser with a saturable absorber. The spatio-temporal events on which we perform the statistical analysis are identified as maxima of the field intensity in the 3D space $(x,y,t)$.
Rimoldi, C., Barland, S, PRATI, FRANCO, TISSONI, GIOVANNA LIA   +3 more
openaire   +4 more sources

Directed evolution of enzymes at the crossroads of tradition and innovation

FEBS Open Bio, EarlyView.
An iterative cycle of data‐driven enzyme optimization comprising four stages: genetic diversification of a template enzyme, expression of protein variants, high‐throughput evaluation, and machine‐learning‐guided redesign of the next variant library.
Maria Tomkova, Andrej Mirossay, Erik Sedlak   +2 more
wiley   +1 more source

In Situ Preparation of Thin-Film Q-Switches Based on Vanadium Dioxide for Pulsed Fiber Lasers

Photonics
In the presented work, erbium fiber lasers operating in the pulsed mode with a nonlinear element containing a vanadium oxide saturable absorber are demonstrated. The structure of the saturable absorber is based on a segment of thinned silica fiber coated
Dmitriy P. Sudas, Sergei M. Popov, Petr I. Kuznetsov   +2 more
doaj   +1 more source

Topological Insulator: $\hbox{Bi}_{2}\hbox{Te}_{3}$ Saturable Absorber for the Passive Q-Switching Operation of an in-Band Pumped 1645-nm Er:YAG Ceramic Laser

IEEE Photonics Journal, 2013
An in-band pumped 1.645-μm Er:YAG ceramic laser passively Q-switched by a topological insulator: Bi2Te3 saturable absorber is reported. The average output power could reach up to 210 mW, corresponding to a pulsewidth, a pulse repetition rate, and ...
Pinghua Tang, Xiaoqi Zhang, Chujun Zhao, Yong Wang, Han Zhang, Deyuan Shen, Shuangchun Wen, Dingyuan Tang, Dianyuan Fan   +8 more
doaj   +1 more source

Layered Ta₂NiS₅ Q-Switcher for Mid-Infrared Fluoride Fiber Laser

IEEE Photonics Journal, 2021
We have demonstrated the stable Q-switched Er-doped fluoride fiber laser with the help of the few-layered Ta2NiS5 in the mid-infrared spectral range. We fabricated the mid-infrared saturable absorber mirror (SAM) by depositing the layered Ta2NiS5 on a ...
Qinwen Duan, Lingling Yang, Yuan He, Longlong Chen, Jie Li, Lili Miao, Chujun Zhao   +6 more
doaj   +1 more source