Nonlinear optical enhancement caused by a higher order multipole mode of metallic triangles

Veen, Monique A. van der; Rosolen, Gilles; Verbiest, Thierry; Vanbel, Maarten; Maes, Björn; Kolarić, Branko

doi:10.1039/c4tc02427c

Cited by 9 publications

(13 citation statements)

References 27 publications

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“…Thanks to the plasmonic resonances, the overall transmission of the nanostructured film increases, and becomes larger than the continuous planar film (see figure 3), even though the nanostructured film is thicker than the continuous film (25 versus 10 nm). It exhibits resonances with an asymmetric peak, which resembles very much the one previously reported for extraordinary transmission of different metallic subwavelength nanostructures [2,31,32]. In the case of the structured film, the peak in the absorption probably arises from the excitation of dipolar mode of the plasmonic array.…”

Section: Transmission Spectrum Of the Planar And Nanostructured Metalsupporting

confidence: 77%

Transmission of entangled photons studied by quantum tomography: do we need plasmonic resonances?

et al. 2019

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We performed quantum tomography to reveal the robustness of quantum correlations of photons entangled in polarisation after their interaction with plasmonic and nonplasmonic environments at normal incidence. The experimental findings clearly show that the visibility of quantum correlations survives the interaction, and that the presence of plasmonic resonances has not any significant influence on the survival of polarisation correlations for transmitted photon pairs. The results indicate that quantum states can be encoded into the multiple motions of a many-body electronic system without demolishing their quantum nature. The plasmonic structures and their resonances only enhance the overall transmission. Thus, they could benefit the pair detection rate, that is the number of coincidences per unit of time, but they do not affect the visibility of quantum correlations. We also performed quantum tomography of the entangled pairs after interaction with the continuous planar gold film as a function of the incidence angle. The latter illustrates the loss of polarization correlations that arises from the partially polarizing properties of the isotropic sample out of normal incidence. Our work shows that plasmonic structures are not needed to exploit quantum entanglement if the rate of coincidence counting is sufficient.

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Section: Transmission Spectrum Of the Planar And Nanostructured Metalsupporting

confidence: 77%

Transmission of entangled photons studied by quantum tomography: do we need plasmonic resonances?

et al. 2019

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“…Fig. 7 a) and b) shows that the enhancement of the near field tends to selectively reside on the edges, a typical sign of retardation, in which only a fraction of the triangular prism experiences the polarization [47]. In the red region of the electromagnetic spectrum, the enhanced near field is concentrated at the tips, which is more dipolar-like.…”

Section: Resultsmentioning

confidence: 92%

Plasmonic enhancement of amorphous silicon solar photovoltaic cells with hexagonal silver arrays made with nanosphere lithography

Güney

Pearce

2016

Mater. Res. Express

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Nanosphere lithography (NSL) provides an opportunity for a low-cost and scalable method to optically engineer solar photovoltaic (PV) cells. For PV application, NSL is widely used in rear contact scenarios to excite SPP and/or high order diffractions, however, the top contact scenarios using NSL are rare. In this paper a systematic simulation study is conducted to determine the capability of achieving efficiency enhancement in hydrogenated amorphous silicon (a-Si:H) solar cells using NSL as a top contact plasmonic optical enhancer. The study focuses on triangular prism and sphere arrays as they are the most commonly and easily acquired through direct deposition or low-temperature annealing, respectively. For optical enhancement, a characteristic absorption profile is generated and analyzed to determine the effects of size, shape and spacing of plasmonic structures compared to an un-enhanced reference cell. The factors affecting NSLenhanced PV performance include absorption, shielding effects, diffraction, and scattering. In the triangular prism array, parasitic absorption of the silver particles proves to be problematic, and although it can be alleviated by increasing the particle spacing, no useful enhancement was observed in the triangular prism arrays that were simulated. Sphere arrays, on the other hand, have broad scattering cross-sections that create useful scattering fields at several sizes and spacing intervals. For the simulated sphere arrays the highest enhancement found was 7.4%, which was fabricated with a 250nm radius nanosphere and a 50nm silver thickness, followed by annealing in inert gas. These results are promising and provide a path towards the commercialization of plasmonic a-Si:H solar cells using NSL fabrication techniques.

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“…5 is depicted in Fig. 7 (6). At this wavelength (λ 0 = 6.35 μm), the 0.1-eV-doped graphene disk (at right) is dielectric, and the incident electric field only couples with the dipolar mode of the fixed 0.4-eV-doped graphene disk.…”

Section: Strong Resonancementioning

confidence: 99%

“…Metallic nanoparticles with various shapes from spheres to triangles and nanorods have been widely investigated [1][2][3][4]. They demonstrate a strong interaction with incident light, with, for example, hot spots on tips, making them suitable for a wide range of applications such as biosensing [5], nonlinear optics [6], nanocircuits [7], and optoelectronics [8]. Strong field enhancements also appear on the edge of two adjacent nanoparticles [9], so that two dipolar modes hybridize and localize the charge density on the junction edges [10].…”

Section: Introductionmentioning

confidence: 99%

Asymmetric and connected graphene dimers for a tunable plasmonic response

Rosolen

Maes

2015

Phys. Rev. B

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We investigate the infrared response of graphene dimers with various doping and polarization configurations. The interaction between the plasmonic resonances of graphene nanodisks leads to a rich, tunable behavior. The hybridization of the nanodisk modes enables the excitation of resonances that would be invisible or dark in a single disk. The simulation results show various anticrossings that depend on dark-bright or bright-bright mode coupling, which we can describe via a simple Hamiltonian model. In addition, we determine the response of a dimer bridged by a tunable graphene junction. This structure leads to charge transfer plasmons, with an even higher absorption efficiency and tunability than nonbridged dimers.

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Nonlinear optical enhancement caused by a higher order multipole mode of metallic triangles

Abstract: We describe a nonlinear optical study of gold triangles that exploits a higher order plasmonic resonance.

Cited by 9 publications

References 27 publications

Transmission of entangled photons studied by quantum tomography: do we need plasmonic resonances?

Transmission of entangled photons studied by quantum tomography: do we need plasmonic resonances?

Plasmonic enhancement of amorphous silicon solar photovoltaic cells with hexagonal silver arrays made with nanosphere lithography

Asymmetric and connected graphene dimers for a tunable plasmonic response

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