The origin of second harmonic generation hotspots in chiral optical metamaterials [Invited]

Valev, Ventsislav K.; Zheng, Xuezhi; Biris, Claudiu G.; Silhanek, Alejandro; Volskiy, Vladimir; Clercq, Ben De; Aktsipetrov, O. A.; Ameloot, Marcel; Panoiu, Nicolae C.; Vandenbosch, Guy A. E.; Мощалков, В.В.

doi:10.1364/ome.1.000036

Cited by 50 publications

(31 citation statements)

References 42 publications

(41 reference statements)

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“…The generated heat can go beyond the melting point and finally decorates the optical response of the structure. Similar simulation-experiment comparisoncan be found in [26][27][28][29][30][31].…”

Section: Volume Integral Equation Formulation and Volumetric Methods Osupporting

confidence: 79%

Understanding the Physical Behavior of Plasmonic Antennas Through Computational Electromagnetics

Zheng

Vandenbosch²,

Moshchalkov³

2017

Nanoplasmonics - Fundamentals and Applications

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This chapter focuses on understanding the electromagnetic response of nanoscopic metallic antennas through a classical computational electromagnetic algorithm: volumetric method of moments (V-MoMs). Under the assumption that metals only respond to external electromagnetic disturbance locally, we rigorously formulate the light-nanoantenna interaction in terms of a volume integral equation (VIE) and solve the equation by using the method of moments algorithm. Modes of a nanoantenna, as the excitation independent solution to the volume integral equation (VIE), are introduced to resolve the antenna's complex optical spectrum. Group representation theory is then employed to reveal how the symmetry of a nanoantenna defines the modes' properties and determines the antenna's optical response. Through such a treatment, a set of tools that can systematically treat the interaction of light with a nanoantenna is developed, paving the road for future nanoantenna design.

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Section: Volume Integral Equation Formulation and Volumetric Methods Osupporting

confidence: 79%

Understanding the Physical Behavior of Plasmonic Antennas Through Computational Electromagnetics

Zheng

Vandenbosch²,

Moshchalkov³

2017

Nanoplasmonics - Fundamentals and Applications

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“…More details on the deposition and on the rest of the sample preparation can be found in Ref. 18. The outer side of each square measures 1000 nm, the width of the metallic stripes is 200 nm, and all the nanostructures are 200 nm apart from each other, as shown in Figure 1 c. The total area of the sample is 2.5 by 2.5 mm.…”

mentioning

confidence: 99%

Distributing the Optical Near‐Field for Efficient Field‐Enhancements in Nanostructures

et al. 2012

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Circularly polarized light imparts a sense of rotation on the electron density in ring‐shaped gold nanostructures. As a consequence, the near‐field enhancement becomes homogeneous on the surface of the nanostructures, thereby increasing the opportunity for interaction with molecules. This type of nanostructured samples can find a broad range of applications in chemical processes where the interaction between molecules and local field enhancements play an important role.

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“…However, this is not the case for nanomaterials, because we cannot distinguish between their surface and bulk contribution. Thus this candidate remains and there are similar examples 28,35) . As for χ ଷଵଷ (ଶ) element, two applied electric fields are polarized in direction 1 and 3 and the higher order contribution can be written as…”

mentioning

confidence: 59%

“…In general, we can express this higher order contribution into the nonlinear polarization at 2ω as 28,30) …”

Section: Resultsmentioning

confidence: 99%

Optical second harmonic generation from V-shaped chromium nanohole arrays

Quang

Miyauchi

Mizutani

et al. 2014

Jpn. J. Appl. Phys.

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We observed rotational anisotropy of optical second harmonic generation (SHG) from V-shaped chromium nanohole arrays with 150 nm arm-length, 50 nm width, 360 nm periodicity, 120 o apex angle, and an area of 100 µm 2 , fabricated by electron beam lithography. Phenomenological analysis indicated that the effective nonlinear susceptibility element χ ଷଵଷ (ଶ) had a characteristic contribution to the observed anisotropic SHG intensity patterns. Here coordinate 1 is in the direction of the tip of V shapes in the substrate plane, and 3 indicates the direction perpendicular to the sample surface. The SHG intensity for the S-polarized output light was very weak, probably due to cancellation effect by the image dipoles created at the metal-air boundary. The possible origin of the observed nonlinearity was discussed according to the susceptibility elements obtained.2

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The origin of second harmonic generation hotspots in chiral optical metamaterials [Invited]

Cited by 50 publications

References 42 publications

Understanding the Physical Behavior of Plasmonic Antennas Through Computational Electromagnetics

Understanding the Physical Behavior of Plasmonic Antennas Through Computational Electromagnetics

Distributing the Optical Near‐Field for Efficient Field‐Enhancements in Nanostructures

Optical second harmonic generation from V-shaped chromium nanohole arrays

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