Perspectives on nonlinear optics of graphene: Opportunities and challenges

Vermeulen, Nathalie

doi:10.1063/5.0082728

Cited by 16 publications

(10 citation statements)

References 73 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The progress made so far has been promoted by advances in the 2D materials synthesis and proper morphological characterization. Also, the tunability of the NLO response using electrical gating , Soavi 2018] is an important advantage for the practical use of both the refractive and absorptive nonlinearities in, e.g., wavelength converters and saturable-absorption-based modelocked lasers, respectively [Vermeulen 2022]. Nevertheless, further fabrication improvement is necessary to achieve large-area films on a wide range of substrates, easy placement of contact points, proper etching, and advanced metrology control.…”

Section: Advancement and Challenges For 2d Materialsmentioning

confidence: 99%

Post-2000 nonlinear optical materials and measurements: data tables and best practices

Vermeulen¹,

Espinosa²,

Ball³

et al. 2023

J. Phys. Photonics

Self Cite

View full text Add to dashboard Cite

In its 60 years of existence, the field of nonlinear optics has gained momentum especially over the past two decades thanks to major breakthroughs in material science and technology. In this article, we present a new set of data tables listing nonlinear-optical properties for different material categories as reported in the literature since 2000. The papers included in the data tables are representative experimental works on bulk materials, solvents, 0D-1D-2D materials, metamaterials, fiber waveguiding materials, on-chip waveguiding materials, hybrid waveguiding systems, and materials suitable for nonlinear optics at THz frequencies. In addition to the data tables, we also provide best practices for performing and reporting nonlinear-optical experiments. These best practices underpin the selection process that was used for including papers in the tables. While the tables indeed show strong advancements in the field over the past two decades, we encourage the nonlinear-optics community to implement the identified best practices in future works. This will allow a more adequate comparison, interpretation and use of the published parameters, and as such further stimulate the overall progress in nonlinear-optical science and applications

show abstract

Section: Advancement and Challenges For 2d Materialsmentioning

confidence: 99%

Post-2000 nonlinear optical materials and measurements: data tables and best practices

Vermeulen¹,

Espinosa²,

Ball³

et al. 2023

J. Phys. Photonics

Self Cite

View full text Add to dashboard Cite

show abstract

“…The Supporting Information is available free of charge at https://pubs.acs.org/doi/10.1021/acs.jpclett.2c03205. Time-dependent density matrix method based on the tight-binding description of the electronic structure of graphene with supporting figure and table, nonlinear response at plasmon resonance with supporting figure, nonlinear near fields with supporting figures, the nonlinear response of graphene nanoflakes with V 1 (5)(6)(7)(8)(9)…”

Section: ■ Associated Contentmentioning

confidence: 99%

“…Owing to an electron motion confined to the 2D plane of the atoms, and its band structure characterized by the Dirac cone at the K-point, graphene shows remarkable properties in electron transport, light–matter interaction, and spintronics. − In particular, multiple experimental and theoretical studies demonstrated that electrical doping allows one to control the linear and nonlinear optical response of graphene nanostructures, which is to a large extent enabled by tunability of their collective electronic excitations, 2D graphene plasmons. ,− The possibility of an active control along with strong nonlinearity makes graphene nanostructures a versatile platform for linear ,, and nonlinear ,− applications in information technologies, wavelength conversion, and sensing among others.…”

mentioning

confidence: 99%

Atomic-Scale Defects Might Determine the Second Harmonic Generation from Plasmonic Graphene Nanostructures

Aguillon

Borisov

2023

J. Phys. Chem. Lett.

View full text Add to dashboard Cite

In this work, we theoretically investigate the impact of the atomic scale lattice imperfections of graphene nanoflakes on their nonlinear response enhanced by the resonance between an incident electromagnetic field and localized plasmon. As a case study, we address the second harmonic generation from graphene plasmonic nanoantennas of different symmetries with missing carbon atom vacancy defects in the honeycomb lattice. Using the many-body time-dependent density matrix approach, we find that one defect in the nanoflake comprising over five thousand carbon atoms can strongly impact the nonlinear hyperpolarizability and override the symmetry constraints. The effect reported here cannot be captured using the relaxation time approximation within the quantum or classical framework. Results obtained in this work have thus important implications for the design of nonlinear graphene devices.

show abstract

“…However, a great disparity exists in the literature regarding the nonlinear response of graphene [ 18 ], and the abovementioned results have not led to nonlinear graphene-based hybrid devices with outstanding performance so far [ 19 ]. This is partly due to the typically high linear absorption of graphene that tends to mitigate the net nonlinear response of the device, especially at telecom wavelengths.…”

Section: Introductionmentioning

confidence: 99%

Pulsed Four-Wave Mixing at Telecom Wavelengths in Si3N4 Waveguides Locally Covered by Graphene

et al. 2023

View full text Add to dashboard Cite

Recently, the nonlinear optical response of graphene has been widely investigated, as has the integration of this 2D material onto dielectric waveguides so as to enhance the various nonlinear phenomena that underpin all-optical signal processing applications at telecom wavelengths. However, a great disparity continues to exist from these experimental reports, depending on the used conditions or the hybrid devices under test. Most importantly, hybrid graphene-based waveguides were tested under relatively low powers, and/or combined with waveguide materials that already exhibited a nonnegligible nonlinear contribution, thereby limiting the practical use of graphene for nonlinear applications. Here, we experimentally investigate the nonlinear response of Si3N4 waveguides that are locally covered by submillimeter-long graphene patches by means of pulsed degenerate four-wave mixing at telecom wavelength under 7 W peak powers. Our measurements and comparison with simulations allow us to estimate a local change of the nonlinearity sign as well as a moderate increase of the nonlinear waveguide parameter (γ∼−10 m−1W−1) provided by graphene. Our analysis also clarifies the tradeoff associated with the loss penalty and nonlinear benefit afforded by graphene patches integrated onto passive photonic circuits, thereby providing some guidelines for the design of hybrid integrated nonlinear devices, coated with graphene, or, more generally, any other 2D material.

show abstract

Perspectives on nonlinear optics of graphene: Opportunities and challenges

Cited by 16 publications

References 73 publications

Post-2000 nonlinear optical materials and measurements: data tables and best practices

Post-2000 nonlinear optical materials and measurements: data tables and best practices

Atomic-Scale Defects Might Determine the Second Harmonic Generation from Plasmonic Graphene Nanostructures

Pulsed Four-Wave Mixing at Telecom Wavelengths in Si3N4 Waveguides Locally Covered by Graphene

Contact Info

Product

Resources

About