Results 41 to 50 of about 88,499 (309)

Study of a Graphene Saturable Absorber Film Fabricated by the Optical Deposition Method

open access: yesIEEE Photonics Journal, 2019
A film composed of graphene saturable absorber ($GSA$) prepared for a passive mode-locking (PML) fiber laser is successfully fabricated by an optical deposition method.
Xinyue Zhu, Shufen Chen
doaj   +1 more source

Castration‐resistant prostate cancer cells are addicted to the high activity of cyclin‐dependent kinase 2

open access: yesMolecular Oncology, EarlyView.
We show that emergence of castration‐resistant prostate (CRPC) is associated with significant upregulation of cyclins that positively regulate cyclin‐dependent kinase 2 (CDK2) and concomitant downregulation of CDK4 cyclins. This renders CRPC cells dependent on the high activity of CDK2, and CDK2 inhibitors synergistically sensitize CRPC cells to both ...
Joyeeta Chatterjee   +3 more
wiley   +1 more source

Passively Q-switched nd:YAG laser via a WS2 saturable absorber

open access: yes, 2016
In this work, we report a passively Q-switched Nd:YAG laser at 1064 nm by using WS2 solution as the saturable absorber (SA). The WS2 solution with different concentrations (0.25, 0.5, and 1 mg/ml) were fabricated by the liquid-phase-exfoliated method ...
Wang, Yonggang   +5 more
core   +1 more source

Numerical analysis of molecules intersystem crossing effect on a passively Q- switched laser pulse characteristics

open access: yesIraqi Journal of Physics, 2021
The effect of molecules intersystem crossing (Kisc) on characteristics (energy and duration) of a Passive Q- switched Laser Pulse has been studied by mathematical description (rate equations model) for temporal performance of which was used as a ...
Abdul-Kareem Mahdi Salih
doaj  

Generation of Bright-Dark Soliton Pairs in Mode-Locked Fiber Laser Based on Molybdenum Diselenide

open access: yesIEEE Access, 2020
In this article, molybdenum diselenide (MoSe2) was fabricated by chemical vapor deposition (CVD) with a modulation depth of about 7.3% and nonsaturable loss of about 30.6%.
Xiaofa Wang, Huihui Han, Dongxin Liu
doaj   +1 more source

Directed evolution of enzymes at the crossroads of tradition and innovation

open access: yesFEBS 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   +2 more
wiley   +1 more source

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

open access: yesResults 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   +5 more
doaj   +1 more source

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

open access: yesAdvances 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   +3 more
doaj   +1 more source

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

open access: yesIEEE 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   +4 more
doaj   +1 more source

Slow light in saturable absorbers [PDF]

open access: yesPhysical 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

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