Two-photon absorption and saturable absorption of mid-IR in graphene

Malouf, Andrew; Henderson-Sapir, Ori; Set, Sze Yun; Yamashita, Shinji; Ottaway, D. J.

doi:10.1063/1.5088641

Cited by 31 publications

(13 citation statements)

References 43 publications

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“…The measured saturation intensity is low when compared to the reported values in various spectral ranges, especially at visible range [47][48][49][50][51][52][53][54]. However, it is comparable with the theoretical value [55].…”

Section: Nonlinear Optical Characterizationsupporting

confidence: 55%

Nonlinear optical absorption and asymmetric charge carrier conduction in chemical vapor deposited single-layer graphene

Thomas

Nalini

Jayaraj

et al. 2020

Mater. Res. Express

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In this work, we report the nonlinear optical absorption and asymmetric charge carrier conduction in single layer graphene films deposited by chemical vapor deposition (CVD) technique on copper foils with pretreated surface. XRD texture and pole figure analysis of the substrate are utilized for the visualization of the effect of the pretreatment on the substrate. The synthesised graphene is employed as a channel layer in a back gated field-effect transistor and the asymmetric behavior of charge carriers is analyzed. Nonlinear optical response of graphene is recorded after transferring it onto a quartz substrate. Open aperture Z-scan technique yields a nonlinear absorption coefficient of 5.34×10 6 cm GW −1 . The film exhibits saturable absorption in the visible range with a saturation intensity as low as 0.134 GW cm −2 .

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Section: Nonlinear Optical Characterizationsupporting

confidence: 55%

Nonlinear optical absorption and asymmetric charge carrier conduction in chemical vapor deposited single-layer graphene

Thomas

Nalini

Jayaraj

et al. 2020

Mater. Res. Express

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“…Third‐order optical nonlinearity plays a key role in nonlinear photonic devices . In this section, we will briefly discuss two important nonlinear properties of layered materials, namely Kerr effect and nonlinear absorption, and review their recent research history.…”

Section: Fundamental Of 2d Layered Materialsmentioning

confidence: 99%

2D Layered Materials: Synthesis, Nonlinear Optical Properties, and Device Applications

Guo

Xiao

Wang

et al. 2019

Laser & Photonics Reviews

421

197

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In recent years, 2D layered materials, including graphene, topological insulators, transition metal dichalcogenides, black phosphorus, MXenes, graphitic carbon nitride, and metal‐organic frameworks, have attracted considerable interest due to their potential applications in the fields of physics, chemistry, biology, and energy. Their rise in the field of nonlinear photonics began around 2009 and has become an important research direction. Here, the synthesis techniques, nonlinear optical properties, integration strategies, and device applications of layered materials are reviewed. In terms of nonlinear optical properties, the focus is on saturable absorption and Kerr nonlinearity. On this basis, their applications in various pulsed lasers, including fiber lasers, solid‐state lasers, waveguide lasers, and related nonlinear optical phenomenon, are summarized. In addition, novel optical devices using layered materials, such as optical modulators, optical polarizers, optical switchers, and even all‐optical device, are also involved. It is believed that the development of 2D layered materials in the field of photonics will continue to deepen, thus laying a good foundation for its practical application.

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“…2e, f with PMMA as the host material (see Methods and Supplementary Note 1), where the Bio-Te exhibited much stronger SA than graphene at both 2.5 μm and 2.8 μm wavelengths. This weak NLO response of graphene may be partially attributed to its two-photon absorption 27 , which is more obvious at higher laser irradiance (see the dip of transmission around z = 0 cm in Supplementary Fig. 1b).…”

Section: Resultsmentioning

confidence: 99%

Bacterially synthesized tellurium nanostructures for broadband ultrafast nonlinear optical applications

et al. 2019

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Elementary tellurium is currently of great interest as an element with potential promise in nano-technology applications because of the recent discovery regarding its three two-dimensional phases and the existence of Weyl nodes around its Femi level. Here, we report on the unique nano-photonic properties of elemental tellurium particles [Te(0)], as harvest from a culture of a tellurium-oxyanion respiring bacteria. The bacterially-formed nano-crystals prove effective in the photonic applications tested compared to the chemically-formed nano-materials, suggesting a unique and environmentally friendly route of synthesis. Nonlinear optical measurements of this material reveal the strong saturable absorption and nonlinear optical extinctions induced by Mie scattering over broad temporal and wavelength ranges. In both cases, Te-nanoparticles exhibit superior optical nonlinearity compared to graphene. We demonstrate that biological tellurium can be used for a variety of photonic applications which include their proof-of-concept for employment as ultrafast mode-lockers and all-optical switches.

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Two-photon absorption and saturable absorption of mid-IR in graphene

Cited by 31 publications

References 43 publications

Nonlinear optical absorption and asymmetric charge carrier conduction in chemical vapor deposited single-layer graphene

Nonlinear optical absorption and asymmetric charge carrier conduction in chemical vapor deposited single-layer graphene

2D Layered Materials: Synthesis, Nonlinear Optical Properties, and Device Applications

Bacterially synthesized tellurium nanostructures for broadband ultrafast nonlinear optical applications

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