Enhanced Nonlinearities in Double-Fishnet Negative-Index Photonic Metamaterials

Guo, Jun; Xiang, Yuanjiang; Dai, Xiaoyu; Wen, Shuangchun

doi:10.2528/pier12120601

Cited by 6 publications

(4 citation statements)

References 37 publications

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“…Efficiency of the SHG in the mentioned structure, considering the losses in resonance frequency, should also be estimated [31]. This efficiency is obtained to be more than 30 times larger than that of the nonlinear dielectric alone.…”

Section: Resultsmentioning

confidence: 97%

Considerably Enhanced Second-Harmonic Generation in Resonant U-Shaped Nano-Structures

Sabet

Khoshsima

2019

IJOP

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In this paper, we perform a detailed study of the spectral response of the gold U-shaped nano-structures for different geometrical parameters and polarizations in order to obtain significant localization factor in the wavelength 1.55 μm. The obtained near-field distribution of electric fields reveals that resonances in these nano-structures correspond to the even and odd plasmonic modes depending on the geometrical parameters and polarization directions. Considerably large localization factor is obtained for the first odd mode in specific geometrical parameters. Then, this structure is considered to be surrounded by a typical secondorder nonlinear dielectric. The effective susceptibility is calculated for the considered structure, using the nonlinear retrieval method, to demonstrate the enhanced second-harmonic generation quantitatively. In order to represent the applicability of the investigated structure in nano-scale light sources and frequency doublers, its second harmonic generation efficiency is compared with the efficiency of the nonlinear dielectric alone with the same dimensions.

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Section: Resultsmentioning

confidence: 97%

Considerably Enhanced Second-Harmonic Generation in Resonant U-Shaped Nano-Structures

Sabet

Khoshsima

2019

IJOP

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“…Note that the dependence of b C and b L on x 2 and x 3 , although not explicitly shown in (2) and (3), occurs due to the analogous form of (4) and (5). Before proceeding with our design algorithm, it is worth discussing the main assumptions under which the equivalent circuit of [26] has been developed, as they will be proven useful for the development and interpretation of the featured procedure.…”

Section: Circuit Model For the Transmission Through An Infinite Sfsmentioning

confidence: 99%

“…Initially, they have been employed for the realization of low-loss, negative-refractive-index materials in the microwave, near-infrared, and optical region [1][2][3][4][5]. Nonetheless, such structures should not be confused with the traditional frequency selective surfaces (FSSs), exhaustively studied since the 1950's [6,7].…”

Section: Introductionmentioning

confidence: 99%

Enhanced Design of Narrowband Filters Based on the Extraordinary Transmission Through Single Fishnet Structures

Nye¹,

Dimitriadis²,

Kantartzis³

et al. 2013

PIER

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Abstract-A systematic method for the efficient design of narrowband filters founded on the extraordinary transmission via single fishnet structures (SFSs) is presented in this paper. Essentially, due to its strong resonant behavior, this phenomenon is proven suitable for the implementation of high-Q devices. The new design formulas are derived through the combination of full-wave numerical simulations and curve fitting algorithms. Also, adequate mathematical criteria are defined for the evaluation of the filters' linear performance, indicating that the transmitted electromagnetic waves remain practically undistorted in the frequency band of interest. Then, by exploiting the previously developed relations, proper correction factors are introduced in the existing SFS equivalent circuit expressions, which hardly increase the overall computational complexity. This quantitative modification leads to an enhanced characterization of SFSs, as key components for diverse applications. Finally, several limitations as well as possible ways of extending the featured algorithm to more complicated structures and higher frequency bands are briefly discussed.

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“…However, the magnitude of negative refractive index is a little smaller and its bandwidth is also much narrower compared to negative refraction materials based on metallic periodic structures [35][36][37]. According to Eqs.…”

Section: Negative Refraction Behaviormentioning

confidence: 99%

Magnetic Response and Negative Refraction at Optical Frequencies on the Basis of Electronic Transitions in Rare-Earth Ions Doped Crystals

Fu¹,

Xu²,

Zhou³

2013

PIER

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Abstract-Magnetic response based on a two-level magnetic dipole transition in rare earth ions doped crystals was studied. Semi-classic theory and Wigner-Eckart theorem were used to calculate the magnetic permeability. It is found that negative permeability can be attained near the transition frequencies. In order to realize simultaneously negative permittivity and negative permeability, an electric dipole transition at the same frequency was also adopted, and a negative refraction region with a bandwidth of 0.57 MHz is demonstrated in (Yb 0.02 Sm 0.02 Y 0.96 ) 3 Al 5 O 12 crystal. This explores a new route to obtain magnetic response and negative refraction at optical frequencies with nature-existed materials instead of metamaterials.

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Enhanced Nonlinearities in Double-Fishnet Negative-Index Photonic Metamaterials

Cited by 6 publications

References 37 publications

Considerably Enhanced Second-Harmonic Generation in Resonant U-Shaped Nano-Structures

Considerably Enhanced Second-Harmonic Generation in Resonant U-Shaped Nano-Structures

Enhanced Design of Narrowband Filters Based on the Extraordinary Transmission Through Single Fishnet Structures

Magnetic Response and Negative Refraction at Optical Frequencies on the Basis of Electronic Transitions in Rare-Earth Ions Doped Crystals

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