Integration of silicon-loaded nanoplasmonic waveguides onto a micro-machined characterization beam for nonlinear optics applications

Sederberg, Shawn; Elezzabi, A. Y.

doi:10.1016/j.optmat.2015.07.036

Cited by 3 publications

(1 citation statement)

References 18 publications

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“…As depicted in Figs. 9(A)-(B), Si-Au MI nanoplasmonic waveguides were fabricated in a unique scheme that allowed for direct endfire excitation of the waveguide input facets and direct outcoupling of the nonlinear signals from the waveguide output facets [123]. Using this configuration, λ = 1550 nm laser pulses were upconverted to λ = 517 nm third-harmonic signals with efficiencies up to η THG = 2.3 × 10 − 5 [124], as shown in Figs.…”

Section: Nonlinear Optics In Nanoplasmonic Waveguidesmentioning

confidence: 99%

Integrated nanoplasmonic waveguides for magnetic, nonlinear, and strong-field devices

et al. 2016

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Abstract:As modern complementary-metal-oxide-semiconductor (CMOS) circuitry rapidly approaches fundamental speed and bandwidth limitations, optical platforms have become promising candidates to circumvent these limits and facilitate massive increases in computational power. To compete with high density CMOS circuitry, optical technology within the plasmonic regime is desirable, because of the sub-diffraction limited confinement of electromagnetic energy, large optical bandwidth, and ultrafast processing capabilities. As such, nanoplasmonic waveguides act as nanoscale conduits for optical signals, thereby forming the backbone of such a platform. In recent years, significant research interest has developed to uncover the fundamental physics governing phenomena occurring within nanoplasmonic waveguides, and to implement unique optical devices. In doing so, a wide variety of material properties have been exploited. CMOS-compatible materials facilitate passive plasmonic routing devices for directing the confined radiation. Magnetic materials facilitate time-reversal symmetry breaking, aiding in the development of nonreciprocal isolators or modulators. Additionally, strong confinement and enhancement of electric fields within such waveguides require the use of materials with high nonlinear coefficients to achieve increased nonlinear optical phenomenon in a nanoscale footprint. Furthermore, this enhancement and confinement of the fields facilitate the study of strong-field effects within the solid-state environment of the waveguide. Here, we review current stateof-the-art physics and applications of nanoplasmonic waveguides pertaining to passive, magnetoplasmonic, nonlinear, and strong-field devices. Such components are essential elements in integrated optical circuitry, and each fulfill specific roles in truly developing a chip-scale plasmonic computing architecture.

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Section: Nonlinear Optics In Nanoplasmonic Waveguidesmentioning

confidence: 99%

Integrated nanoplasmonic waveguides for magnetic, nonlinear, and strong-field devices

et al. 2016

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Ultrafast nonlinear and strong-field phenomena in silicon-loaded nanoplasmonic waveguides

Sederberg

Firby

Elezzabi

2017

Ultrafast Phenomena and Nanophotonics XXI

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The emergence of strong-field nanoplasmonics brings extreme laser field-matter interaction into the realm of nanoscale science, unveiling exciting new physics. Highly nonlinear interaction is enabled by tightly confined electric fields in nanoplasmonic structures, permitting use of optical fields from low-power laser oscillators. Here, we report the first demonstration of visible 517nm third harmonic generation in ultracompact nanoplasmonic waveguides on a silicon-on-insulator platform at an unprecedented conversion efficiency of ~10 -5 . Exponential growth of broadband white light generation confirms a new strong-field phenomenon of ponderomotive force-driven electron avalanche multiplication. Using time-resolved experiments, we show that the strong nanoplasmonic field confinement allows nonlinear interaction to occur on an ultrafast timescale of 1.98 ± 0.40 ps, despite the long free-carrier lifetime in silicon. These findings uncover a new strong-field interaction that can be used in sensitive nanoplasmonic modulators and hybrid plasmonic-electronic transducers.fibre optics and chip-scale waveguides enabled high electromagnetic intensities to be maintained over long interaction lengths, generating pronounced nonlinear signatures 9,10 .Amassing strong nonlinear signatures over short interaction lengths and at low input power has proven challenging, yet such devices are important elements of nextgeneration integrated optical nanocircuitry. Subwavelength confinement, electric field enhancement, and high sensitivity provided by nanoplasmonic structures make them excellent candidates for compact, all-optical circuitry with gate speeds exceeding those of conventional electronics by orders of magnitude. Furthermore, nanoplasmonic circuitry operating in the telecommunications band on a silicon-based platform would enable monolithic integration with electronic and silicon photonics technologies 11 .Indispensable in the electronics industry, silicon (Si) has accumulated a comprehensive infrastructure of growth and processing techniques that have enabled rapid advances in nanophotonic devices for routing, filtering, buffering, and modulating near-infrared electromagnetic radiation signals 12-14 . Third-order nonlinear effects occurring at the fundamental radiation frequency, χ (3) (ω), including two-photon absorption (TPA) 15,16 , free-carrier absorption (FCA), Raman amplification, 17,18 the optical Kerr effect, four-wave mixing 19,20 , cross-phase modulation 21,22 , and self-phase modulation 23,24 have been studied extensively in silicon-on-insulator (SOI) waveguides.However, third-harmonic generation (THG) has remained elusive in SOI waveguides and has only been observed in a photonic crystal waveguide due to slow light-induced spatial pulse compression. 25 Third-harmonic generation has also been observed in plasmonic nanoparticles, but integration of these particles to optical circuitry has not yet been achieved. [26][27][28] Third-harmonic generation enhanced by strong confinement in a Si-loaded

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Efficient, broadband third-harmonic generation in silicon nanophotonic waveguides spectrally shaped by nonlinear propagation

2019

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Integration of silicon-loaded nanoplasmonic waveguides onto a micro-machined characterization beam for nonlinear optics applications

Cited by 3 publications

References 18 publications

Integrated nanoplasmonic waveguides for magnetic, nonlinear, and strong-field devices

Integrated nanoplasmonic waveguides for magnetic, nonlinear, and strong-field devices

Ultrafast nonlinear and strong-field phenomena in silicon-loaded nanoplasmonic waveguides

Efficient, broadband third-harmonic generation in silicon nanophotonic waveguides spectrally shaped by nonlinear propagation

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