Results 81 to 90 of about 3,978,037 (339)

MXene saturable absorber enabled hybrid mode-locking technology: a new routine of advancing femtosecond fiber lasers performance

open access: yesNanophotonics, 2020
MXene is a promising two-dimensional (2D) material that is widely used in electro-photonic devices due to its unique properties. In this contribution, V2CTx, a novel MXene, was employed as a saturable absorber (SA) for hybrid passively mode-locked fiber ...
Ma Chunyang   +10 more
doaj   +1 more source

Dual-wavelength dispersion-managed soliton all-fiber mode-locked laser based on birefringence-filtered nonlinear polarization evolution

open access: yesResults in Optics, 2022
Single-cavity dual-comb mode-locked lasers, an emerging dual-comb technology, can generate two sets of pulse sequences with excellent mutual coherence, thus eliminating the need for complex active noise reduction systems. We report the generation of dual-
Shuang Niu   +4 more
doaj   +1 more source

Theory of the ultrafast mode-locked GaN lasers in a large-signal regime

open access: yes, 2011
Analytical theory of the high-power passively mode-locked laser with a slow absorber is developed. In distinguishing from previous treatment, our model is valid at pulse energies well exceeding the saturation energy of absorber.
Boiko, Dmitri L.   +2 more
core   +1 more source

Passively mode-locked semiconductor lasers and their applications [PDF]

open access: yes, 2008
In this paper we present some characterizations of passively mode-locked semiconductor lasers. These lasers are multimode and they exhibit a modulation of their output power even though they are DC-biased.
Landais, Pascal   +2 more
core   +1 more source

Sub-200 fs soliton mode-locked fiber laser based on bismuthene saturable absorber.

open access: yesOptics Express, 2018
Few-layer bismuthene is an emerging two-dimensional material in the fields of physics, chemistry, and material science. However, its nonlinear optical property and the related photonics device have been seldom studied so far.
B. Guo   +8 more
semanticscholar   +1 more source

Efficacy of Intermittent Theta‐Burst Stimulation for Prolonged Disorders of Consciousness: A Prospective, Randomized, Controlled Trial

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Background Emerging evidence suggests that low‐frequency neural oscillations are dynamically regulated by consciousness levels, with the recovery of low cortical activity potentially serving as a neurophysiological substrate for conscious emergence. Targeted enhancement of these low‐frequency rhythms in patients with disorders of consciousness
Chuan Xu   +10 more
wiley   +1 more source

Observation of Dissipative Bright Soliton and Dark Soliton in an All-Normal Dispersion Fiber Laser

open access: yesInternational Journal of Optics, 2016
This paper proposes a novel way for controlling the generation of the dissipative bright soliton and dark soliton operation of lasers. We observe the generation of dissipative bright and dark soliton in an all-normal dispersion fiber laser by employing ...
Chunyang Ma   +4 more
doaj   +1 more source

Mode-locked Bloch oscillations in a ring cavity [PDF]

open access: yes, 2014
We present a new technique for stabilizing and monitoring Bloch oscillations of ultracold atoms in an optical lattice under the action of a constant external force.
Bachelard, R.   +5 more
core   +2 more sources

Mode locking mechanism in Fourier-domain mode-locked optoelectronic oscillators

open access: yesOptics Express
Fourier-domain mode-locked (FDML) optoelectronic oscillators (OEOs) are regarded as a promising candidate to generate linearly chirped microwave waveforms (LCMWs) with large time-bandwidth products. Nevertheless, up to date, the mode locking mechanism in FDML-OEOs is still not clear enough.
Lingjie Zhang   +9 more
openaire   +2 more sources

Sarilumab in Polyarticular‐Course Juvenile Idiopathic Arthritis: Dose‐Finding and 1‐Year Analysis of a Phase 2b, Open‐Label, Multicenter Study

open access: yesArthritis Care &Research, EarlyView.
Objective This study assessed sarilumab in treating patients with polyarticular‐course juvenile idiopathic arthritis (pcJIA). Methods This phase 2b, open‐label study (NCT02776735) consisted of three sequential parts (each with a core‐treatment and extension phase).
Fabrizio De Benedetti   +19 more
wiley   +1 more source

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