Cavity nonlinear optics with layered materials

Fryett, Taylor; Zhan, Alan; Majumdar, Arka

doi:10.1515/nanoph-2017-0069

Cited by 57 publications

(63 citation statements)

References 160 publications

(197 reference statements)

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“…Our SHG enhancement factor, ~7000, obtained by using WSe 2 on sapphire as a reference is only 25% of the predicted value owing to the partial absorption of the SHG signal at 400 nm by the gold substrate and partical absorption of the pump caused by the energetic proximity of the exciton in WSe 2 with pump. 12 The reabsorption of the 400-nm signal can be seen in the reflectance spectrum of gold trenches (Figure 3b). Noted that the trenches has a spectrally broad lateral gap plasmon resonance and extremely narrow mode volume thus having large electric field enhancement for pump with wavelength ranging from 800 nm to 900 nm.…”

Section: Resultsmentioning

confidence: 99%

Selectively Plasmon-Enhanced Second-Harmonic Generation from Monolayer Tungsten Diselenide on Flexible Substrates

et al. 2018

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Monolayer two-dimensional transition-metal dichalcogenides (2D TMDCs) exhibit promising characteristics in miniaturized nonlinear optical frequency converters, due to their inversion asymmetry and large second-order nonlinear susceptibility. However, these materials usually have very short light interaction lengths with the pump laser because they are atomically thin, such that second-harmonic generation (SHG) is generally inefficient. In this paper, we fabricate a judiciously structured 150 nm-thick planar surface consisting of monolayer tungsten diselenide and sub-20 nm-wide gold trenches on flexible substrates, reporting ∼7000-fold SHG enhancement without peak broadening or background in the spectra as compared to WSe on as-grown sapphire substrates. Our proof-of-concept experiment yields effective second-order nonlinear susceptibility of 2.1 × 10 pm/V. Three orders of magnitude enhancement is maintained with pump wavelength ranging from 800 to 900 nm, breaking the limitation of narrow pump wavelength range for cavity-enhanced SHG. In addition, SHG amplitude can be dynamically controlled via selective excitation of the lateral gap plasmon by rotating the laser polarization. Such a fully open, flat, and ultrathin profile enables a great variety of functional samples with high SHG from one patterned silicon substrate, favoring scalable production of nonlinear converters. The surface accessibility also enables integration with other optical components for information processing in an ultrathin and flexible form.

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Section: Resultsmentioning

confidence: 99%

Selectively Plasmon-Enhanced Second-Harmonic Generation from Monolayer Tungsten Diselenide on Flexible Substrates

et al. 2018

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“…Here, we point out several prominent results in 2D materials integrated nonlinear nanophotonics. A more detailed discussion on this topic can be found out in a recent review [107].…”

Section: Nonlinear Opticsmentioning

confidence: 99%

Van der Waals materials integrated nanophotonic devices [Invited]

Liu¹,

Zheng²,

Chen³

et al. 2019

Opt. Mater. Express

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Emerging van der Waals materials exhibit a wide range of optical and electronic properties, making them attractive for nanophotonic devices. Due to the nature of van der Waals interactions, this new class of materials can be readily integrated with other existing nanophotonic structures, leading to novel device architectures and operating principles. In this review, we will present the progress of active nanophotonics, realized by integrating van der Waals materials with on-chip optical waveguides or resonators. Additionally, we will review the emerging research area in van der Waals nanophotonics, where the nanophotonic structures are fully made of van der Waals materials. A variety of van der Waals nanophotonic structures, ranging from ultrathin Fresnel lens, metasurfaces to photonic crystal cavities and their potential impacts on miniaturized optical system and quantum technology will be discussed.

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“…In terms of third-order nonlinearity, graphene, black phosphorus, MoS 2 , and other layered materials have χ 3 susceptibility of at least the same order of magnitude with silicon [86,87]. In a silicon photonic crystal cavity covered by graphene, Gu et al observed optical bistability and self-oscillation phenomena [88] [ Fig.…”

Section: A Utilization Of Layered Materials With Parametric Nonlineamentioning

confidence: 99%

Hybrid silicon nonlinear photonics [Invited]

Zhang

Tong

et al. 2018

Photon. Res.

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Nonlinear silicon photonics has shown an ability to generate, manipulate, and detect optical signals on an ultracompact chip at a potential low cost. There are still barriers hindering its development due to essential material limitations. In this review, hybrid structures with some specific materials developed for nonlinear silicon photonics are discussed. The combination of silicon and the nonlinear materials takes advantage of both materials, which shows great potential to improve the performance and expand the applications for nonlinear silicon photonics.

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Cavity nonlinear optics with layered materials

Cited by 57 publications

References 160 publications

Selectively Plasmon-Enhanced Second-Harmonic Generation from Monolayer Tungsten Diselenide on Flexible Substrates

Selectively Plasmon-Enhanced Second-Harmonic Generation from Monolayer Tungsten Diselenide on Flexible Substrates

Van der Waals materials integrated nanophotonic devices [Invited]

Hybrid silicon nonlinear photonics [Invited]

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