All-optical encryption by a heterodyne Kerr gate in multilayer reduced graphene oxide decorated with Pt nanoparticles

Mercado-Zúñiga, C.; Gallegos-Garcia, Gina; Trejo-Valdéz, M.; Martinez-Rivas, Adrian; Vargas-Garcı́a, J.R.; Torres-Torres, C.

doi:10.1016/j.optmat.2021.111324

Cited by 7 publications

(9 citation statements)

References 37 publications

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“…Referring to Ref. 46, the ablation threshold of graphene film was reported as 14 mJ cm−2, which is <0.35 J cm−2 for reduced graphene oxide decorated with platinum nanoparticles (Pt/rGO) 42 . In our simulation, the maximum intensity is about 13 MW cm−2.…”

Section: Theoretical Modeling Of Graphene Optical Responsementioning

confidence: 52%

“…46, the ablation threshold of graphene film was reported as 14 mJ cm −2 , which is <0.35 J cm −2 for reduced graphene oxide decorated with platinum nanoparticles (Pt/rGO). 42 In our simulation, the maximum intensity is about 13 MW cm −2 . For a Gaussian laser, the maximum pulse duration before the graphene ablation is calculated at about 0.86 ns.…”

Section: Nonlinear Optical Response Of Graphenementioning

confidence: 55%

“…The nonlinear refractive index can be derived by different physical mechanisms, such as molecular orientation, electronic polarization, or excited-state population, and among others. 42 Using lasers with a pulse length on the order of a few tens of picoseconds, the measured refractive index should only be due to the Kerr effect. 43 The frequency dependent-third-order optical nonlinearity is described by the susceptibility tensor χ ð3Þ ðω 1 ; ω 2 ; ω 3 Þ or equivalently the conductivity tensor σ ð3Þ ðω 1 ; ω 2 ; ω 3 Þ, which has a complex frequency dependence and describes different physical effects.…”

Section: Nonlinear Optical Response Of Graphenementioning

confidence: 99%

Section: Theoretical Modeling Of Graphene Optical Responsementioning

confidence: 99%

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All-optical hybrid plasmonic waveguide modulator based on Kerr nonlinearity of graphene

2022

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Compared with previous graphene-based optical modulators that can be tuned electrically with the Fermi level, all-optical modulators have attracted much attention due to their ultrafast and broadband response (bandwidth ≈ 200 GHz). To take advantage of hybrid plasmonic waveguides (HPWs) and the nonlinear response of graphene, we proposed all-optical absorption and phase modulators at the wavelength of 1.55 μm and E F ¼ 0.1 eV. The modulators consist of two different geometries, graphene on an HPW and graphene on a double-slot HPW. Compared with the previous graphene-based all-optical modulators, our design has a short-effective waveguide length and higher modulation depth. This was achieved through the incomparable integration of HPW optics and graphene photonics that can be used to design chip-scale, compact, and high-efficiency all-optical modulators.

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Section: Theoretical Modeling Of Graphene Optical Responsementioning

confidence: 52%

Section: Nonlinear Optical Response Of Graphenementioning

confidence: 55%

Section: Nonlinear Optical Response Of Graphenementioning

confidence: 99%

Section: Theoretical Modeling Of Graphene Optical Responsementioning

confidence: 99%

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All-optical hybrid plasmonic waveguide modulator based on Kerr nonlinearity of graphene

2022

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“…Graphene oxide, a graphene-like oxidation two-dimensional (2D) material, has been investigated extensively because of its extraordinary optical nonlinear properties, which have been shown to be superior to normal dielectrics [ 1 ]. Usually, this large nonlinearity can lead to the required interaction length of light with the material reduced in many applications such as conductive transparent coatings [ 2 , 3 ], photocatalysts [ 4 ], microwave absorbers [ 5 ] and all-optical encryption [ 6 ]. However, GO material presents a significant linear loss, even though with a large nonlinear property.…”

Section: Introductionmentioning

confidence: 99%

Low-Threshold Optical Bistability in the Graphene-Oxide Integrated Asymmetric Nanocavity at Visible Light Frequencies

et al. 2022

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Here, we propose an optical bistable device structure with a few layers of graphene oxide integrated in the metal-dielectric-metal based asymmetric nanocavity. Through the light confinement in the nanocavity, the third order nonlinear absorption of graphene oxide can be significantly enhanced, which experimentally delivers low-threshold optical bistability at the visible wavelength of 532 nm with only 267 KW/cm2 intensity. In addition, the switching threshold can be further reduced via increasing the graphene oxide thickness, hence paving a new way for achieving tunable optical bistable devices at visible light frequencies.

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Fabrication and Applications of Heterostructure Materials for Broadband Ultrafast Photonics

Lyu

Lin

et al. 2023

Advanced Optical Materials

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Bo Fu received his Ph.D. degree from Tsinghua University in 2015. After two years of research at the University of Cambridge, he began his independent career as an associate research professor at Beihang University. He has authored and co-authored more than 60 peer-reviewed papers, such as in Advanced Optical Materials, Laser & Photonics Reviews, Advanced Functional Materials, and Small (ESI highly cited paper). His research interests include ultrafast photonics, laser optics, and nanophotonics.

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All-optical encryption by a heterodyne Kerr gate in multilayer reduced graphene oxide decorated with Pt nanoparticles

Cited by 7 publications

References 37 publications

All-optical hybrid plasmonic waveguide modulator based on Kerr nonlinearity of graphene

All-optical hybrid plasmonic waveguide modulator based on Kerr nonlinearity of graphene

Low-Threshold Optical Bistability in the Graphene-Oxide Integrated Asymmetric Nanocavity at Visible Light Frequencies

Fabrication and Applications of Heterostructure Materials for Broadband Ultrafast Photonics

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