Enhanced four-wave mixing process near the excitonic resonances of bulk MoS<sub>2</sub>

Ko, Brian; Sokolov, Alexei V.; Scully, Marlan O.; Zhang, Zhenrong; Lee, Ho Wai Howard

doi:10.1364/prj.7.000251

Cited by 15 publications

(16 citation statements)

References 31 publications

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“…To study the interaction between light and the nanoparticles suspended in liquid, the experiment was conducted using a broadband femtosecond coherent anti-Stokes Raman spectroscopy setup 44 (Newport CARS-KT) depicted in Fig. 6 a.…”

Section: Methodsmentioning

confidence: 99%

Multi-pulse laser-induced bubble formation and nanoparticle aggregation using MoS2 nanoparticles

Lü

Sokolov

et al. 2020

Sci Rep

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Understanding of how particles and light interact in a liquid environment is vital for optical and biological applications. MoS2 has been shown to enhance nonlinear optical phenomena due to the presence of a direct excitonic resonance. Its use in biological applications is predicated on knowledge of how MoS2 interacts with ultrafast (< 1 ps) pulses. In this experiment, the interaction between two femtosecond pulses and MoS2 nanoparticles suspended in liquid is studied. We found that the laser pulses induce bubble formation on the surface of a nanoparticle and a nanoparticle aggregate then forms on the surface of the trapped bubble. The processes of formation of the bubble and the nanoparticle aggregation are intertwined.

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Section: Methodsmentioning

confidence: 99%

Multi-pulse laser-induced bubble formation and nanoparticle aggregation using MoS2 nanoparticles

Lü

Sokolov

et al. 2020

Sci Rep

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“…Meanwhile, other optical properties, including third‐harmonic generation, parametric process, and stimulated Brillouin scattering, have been also explored, which promotes the development of layered materials‐based nonlinear optics.…”

Section: Fundamental Of 2d Layered Materialsmentioning

confidence: 99%

“…Besides optical modulators, other optical devices including optical polarizers, optical filters, optical isolators, optical switchers, optical parametric devices, light‐control‐light device, and even all‐optical signal processing, have been also studied. For example, the researchers developed a broadband polarizer based on graphene to support transverse mode surface wave transmission in visible and near‐infrared bands, as shown in Figure .…”

Section: Novel Optical Devices Using 2d Layered Materialsmentioning

confidence: 99%

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

Guo

Xiao

Wang

et al. 2019

Laser & Photonics Reviews

408

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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“…Physically, this modulation of Kerr nonlinearity term would have originated because of the complex four-wave mixing (FWM) process happening inside the fiber because of the fundamental interactions among different frequency components [18]. The literature provides a clear scientific explanation or practical validation in the form of experiments for the origin of the FWM in physically realizable gratings [19][20][21][22][23][24]. Nonlinear processes inside an optical fiber involving modulation of one or more system parameters are generally referred as parametric processes and in the present work the Kerr nonlinearity parameter is modulated.…”

Section: Introductionmentioning

confidence: 99%

Low-power optical bistability in $\mathcal{PT}$-symmetric chirped Bragg gratings with four-wave mixing

Sudhakar,

Raja,

Govindarajan

et al. 2022

Preprint

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The central theme of this article is the analysis of the usefulness of introducing four-wave mixing or modulation of Kerr nonlinearity in a nonuniform grating structure with gain and loss. To do so, we propose an inhomogeneous system in which the nonlinearity of the P T -symmetric grating is modulated. It is proven that the proposed scheme can be fruitful only if the nonlinearity and its associated modulation terms are assumed to be self-defocusing ones. In order to cut down the intensity required for the steering, the sign of chirping is taken to be negative and the wavelength of operating light is considered to be higher than the Bragg wavelength. Alongside these settings, launching the light from the rear end of the device dramatically reduces the critical intensity to a value of 0.015 (approximately) which must be the lowest switching intensity ever reported in the context of nonlinear P T -symmetric gratings. The ramplike stable states in the broken P T -symmetric regime prevail even in the company of modulation in the nonlinearity index for both of the light incident directions.

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Enhanced four-wave mixing process near the excitonic resonances of bulk MoS₂

Cited by 15 publications

References 31 publications

Multi-pulse laser-induced bubble formation and nanoparticle aggregation using MoS2 nanoparticles

Multi-pulse laser-induced bubble formation and nanoparticle aggregation using MoS2 nanoparticles

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

Low-power optical bistability in $\mathcal{PT}$-symmetric chirped Bragg gratings with four-wave mixing

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Enhanced four-wave mixing process near the excitonic resonances of bulk MoS2

Cited by 15 publications

References 31 publications

Multi-pulse laser-induced bubble formation and nanoparticle aggregation using MoS2 nanoparticles

Multi-pulse laser-induced bubble formation and nanoparticle aggregation using MoS2 nanoparticles

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

Low-power optical bistability in $\mathcal{PT}$-symmetric chirped Bragg gratings with four-wave mixing

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Product

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Enhanced four-wave mixing process near the excitonic resonances of bulk MoS₂