Plasmonic waveguide design for the enhanced forward stimulated brillouin scattering in diamond

Liu, Qiang; Bibbò, Luigi; Albin, Sacharia; Wang, Qiong; Lin, Mi; Lu, Huihui; Ouyang, Zheng

doi:10.1038/s41598-017-18507-3

Cited by 10 publications

(5 citation statements)

References 33 publications

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“…Instead, we use a more general form as expressed by Maxwell stress tensor T ij . Silver can be considered as a perfect electric conductor (PEC), since the electric field in PEC can be considered as zero, hence the T 1zz at the vertical boundary (z direction, silver side) can be considered as zero (Liu et al 2018).…”

Section: Theorymentioning

confidence: 99%

“…Geometrical parameters: r/a = 0.48, r 0 /r = 0.5, H 0 /a = 1/3, a = 300 nm is a strong outward and backward (see the two blue arrows in Fig. 6) RP forces acting on the boundaries of silver/LN (located in the xy plane), which mediates the OMC between resonant plasmonic mode and the defect phononic mode (Liu et al 2018).…”

Section: Optical Featuresmentioning

confidence: 99%

“…For example, in Ref. (Liu et al 2018), Liu et al reported a plasmonic waveguide utilizing gap surface plasmons for producing high Brillouin gain even when the photoelastic property of the dielectric material is poor. As the mode area can go beyond the diffraction limit by forming the surface plasmons at the metal-dielectric interface, hybrid mechanical and plasmonic cavities may also be suitable for harvesting high-frequency phonons and enhancing g 0 (Benz et al 2016;Lin et al 2015;El-Jallal et al 2016;Mrabti et al 2016;Aspelmeyer et al 2014).…”

Section: Introductionmentioning

confidence: 99%

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Hybrid plasmonic–phononic cavity design for enhanced optomechanical coupling in lithium niobate

Liu

Bibbò

et al. 2020

Appl Nanosci

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A hybrid plasmonic-phononic cavity design which enables high vacuum coupling rate has been proposed in lithium niobate (LN) phononic crystals (Phncs) that have been perforated by air holes and coated with thin silver film. By tailoring the geometry, optomechanical interaction between the plasmonic modes (produced by the metal/insulator) and the phononic modes (confined by the phononic bandgap effect) is greatly enhanced. Numerical results based on finite-element method (FEM) reveal that in this hybrid plasmonic-phononic design, high vacuum coupling rate that predominantly contributed by moving boundary effect is on the order of 10 6 Hz, which is about one to two orders higher than that contributed by photoelastic effect shown in conventional phoxonic crystal designs. Results evidence how the vacuum coupling rate depends on geometrical parameters like the radius of the defect air hole, the thickness of silver layer, and LN layer. The simultaneous confinement and strong coupling, combined with other advantages as lack of constraint to the refractive index, and integration of piezoelectric material and metal in a chip, this hybrid design may be suitable for non-invasive biological sensing, optomechanically tunable plasmonic heater for drug release and lab-on-chip devices.

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Section: Theorymentioning

confidence: 99%

Section: Optical Featuresmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Hybrid plasmonic–phononic cavity design for enhanced optomechanical coupling in lithium niobate

Liu

Bibbò

et al. 2020

Appl Nanosci

Self Cite

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“…The left inset in Figure 1 is the three-dimensional structure. When the structure is tall enough along the z-axis direction (the height of the structure can be set as 250 nm, referring to a simple example [ 34 ]), it can be regarded as a two-dimensional one. Similar results can be obtained, and the complexity of calculation is reduced greatly.…”

Section: Structure Model and Designmentioning

confidence: 99%

Tunable Nanosensor Based on Fano Resonances Created by Changing the Deviation Angle of the Metal Core in a Plasmonic Cavity

Wang

Ouyang

Sun

et al. 2018

Sensors

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In this paper, a type of tunable plasmonic refractive index nanosensor based on Fano resonance is proposed and investigated. The sensor comprises a metal-insulator-metal (MIM) nanocavity with a center-deviated metal core and two side-coupled waveguides. By carefully adjusting the deviation angle and distance of the metal core in the cavity, Fano resonances can be obtained and modulated. The Fano resonances can be considered as results induced by the symmetry-breaking or geometric effect that affects the field distribution intensity at the coupling region between the right waveguide and the cavity. Such a field-distribution pattern change can be regarded as being caused by the interference between the waveguide modes and the cavity modes. The investigations demonstrate that the spectral positions and modulation depths of Fano resonances are highly sensitive to the deviation parameters. Furthermore, the figure of merit (FOM) value is calculated for different deviation angle. The result shows that this kind of tunable sensor has compact structure, high transmission, sharp Fano lineshape, and high sensitivity to the change in background refractive index. This work provides an effective method for flexibly tuning Fano resonance, which has wide applications in designing on-chip plasmonic nanosensors or other relevant devices, such as information modulators, optical filters, and ultra-fast switches.

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“…In parallel to these advances in sensing technology, nanostructural engineering and nanophotonic designs are also advancing the optical technology to nanoscale applications. In the last decade, lasing devices with ultra small footprints [142,114], on-chip waveguides [127], plasmonic waveguides [216,128,68], power-splitters [173], phase shifters [97,131],…”

Section: Introductionmentioning

confidence: 99%

Connecting optical communications with bio-sensing and bio-actuation

Sangwan¹

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Light(i.e. an optical signal) in its physical nature is an electromagnetic wave at a very high frequency and with a very small wavelength capable of interacting with micro and nano-scale structures. Leveraging these properties of optical signals at nano-scale, we can design nano-systems for actuation and sensing that could enable next generation of human-machine interfaces, medical treatment procedures or next generation of sensing technologies. In this dissertation, we have connected these technological advances in optical communication and merged them with the state of art bio-actuation technologies such as optogenetics and optogenomics, and state of art nano-sensing technologies such as plasmonic sensing. We achieve this by leveraging the advances made in the nanotechnology, nano-communication over the last decade and utilizing the material properties at nano-scale high-frequency designs. First, we present the design, analysis and experimental results of such systems to support optogenetic excitation at cellular level resolution along with the optogenomic excitation. Then, we present the communication channel models for communications to the plasmonic sensing implants using optical frequencies with the strategies to overcome the channel losses. In addition, we present the design and architecture of the optical beam forming system to dynamically steer optical signals that can target the sensing and actuation applications and enable precise control at excitation, reflection and reception of optical signals. At the end, we present a novel concept of joint sensing and communication using plasmonic nano-antennas along with a detailed analysis of excitation waveform, detection methods and communication performance.xiii

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Plasmonic waveguide design for the enhanced forward stimulated brillouin scattering in diamond

Cited by 10 publications

References 33 publications

Hybrid plasmonic–phononic cavity design for enhanced optomechanical coupling in lithium niobate

Hybrid plasmonic–phononic cavity design for enhanced optomechanical coupling in lithium niobate

Tunable Nanosensor Based on Fano Resonances Created by Changing the Deviation Angle of the Metal Core in a Plasmonic Cavity

Connecting optical communications with bio-sensing and bio-actuation

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