Limitations of graphene nanocoated optical tapers for high-power nonlinear applications

Mouchel, Paul; Kemel, Meriem; Semaan, Georges; Flohic, M. Le; Sanchez, François

doi:10.1016/j.omx.2018.100003

Cited by 3 publications

(2 citation statements)

References 24 publications

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“…Real saturable absorbers, such as carbon nanotubes [8], [9], semiconductor saturable absorber mirrors [10], [11], and graphene [12], [13], can also be used to build mode-locked all-PM fiber lasers. However, they suffer from a relatively low damage threshold and a tendency to degrade over time [14]. Nonlinear optical loop mirror (NOLM) and nonlinear amplifying loop mirror (NALM) are two promising modelocking mechanisms that can be applied in all-PM configurations.…”

Section: Introductionmentioning

confidence: 99%

27nJ, 114fs Pulses From an Environmentally Stable All-Normal All-PM Yb-Doped Fiber Laser Mode-Locked With a Nonlinear Amplifying Loop Mirror

2022

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We report on a self-starting mode-locked allpolarization-maintaining fiber laser using a nonlinear amplifying loop mirror. It delivers a 7.81MHz train of pulses with an average power of 213mW, corresponding to pulse energy higher than 27nJ. The output chirped pulses can be recompressed down to ~114fs with a grating pair compressor. The nonlinear phase shifts accumulated in the long fiber cavity can be used to compensate for the mismatched third order dispersion and increase the compressed pulse quality. The laser shows excellent stability and environmental robustness during the test.

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Section: Introductionmentioning

confidence: 99%

27nJ, 114fs Pulses From an Environmentally Stable All-Normal All-PM Yb-Doped Fiber Laser Mode-Locked With a Nonlinear Amplifying Loop Mirror

2022

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“…Graphene possesses high values of electrical and thermal conductivity and is sufficiently strong in tensile strength [12][13][14][15]. At the same time, it forms folds and is unstable as a separate free-hanging film [16,17]. Discovered in 2011, the MXene have surpassed graphene in both electrical characteristics and manufacturability [18,19].…”

Section: Introductionmentioning

confidence: 99%

RADICAL-BASED TunING THE SURFACE functionaliTY of MXene

Olshtrem

Chertopalov

Guselnikova

et al. 2020

NANOCON Conference Proeedings

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The family of MAX phases and their derivative MXenes are continuously growing in terms of both crystalline and composition varieties. MXenes are a new family of two-dimensional (2D) transition metal carbides, carbonitrides and nitrides, with a general formula Mn+1AXn, where n = 1-3, M denotes a transition metal, A is an element such as aluminum or silicon, and X is either carbon or nitrogen. Considering the various elemental composition possibilities, surface functional tunability, various magnetic orders, and large spin-orbit coupling, MXene can truly be considered as multifunctional materials that can be used to realize highly correlated phenomena. However, a change in surface chemical groups can significantly alter the properties and functionality of MXene flakes and may even damage the flakes. In this paper, we propose the possibility of using soft, chemical transformation to tune the MXene surface chemistry and termination. We used fluorinated and brominated substituents for MXenes grafting and subsequent analysis of the surface composition of the MXene flakes indicated a decrease in oxygen and a simultaneous increase in fluorine and bromine surface concentrations. The ability to graft organic groups with various substituents to the surface of the flakes opens up new possibilities for their application. The presence of fluorinated groups on the surface makes it hydrophobic, which allows the creation of water-repellent flakes, and prevents rapid oxidation by atmospheric oxygen and related formation of titanium oxide on the surface.

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