scholarly journals Design, concepts, and applications of electromagnetic metasurfaces

Nanophotonics ◽  
2018 ◽  
Vol 7 (6) ◽  
pp. 1095-1116 ◽  
Author(s):  
Karim Achouri ◽  
Christophe Caloz
Keyword(s):  
Second Harmonic Generation ◽  
Harmonic Generation ◽  
Light Emission ◽  
Second Harmonic ◽  
Historical Context ◽  
Spatial Processing ◽  
Tensor Model ◽  
Susceptibility Tensor ◽  
Design Concepts ◽  
Emission Enhancement

AbstractThe paper overviews our recent work on the synthesis of metasurfaces and related concepts and applications. The synthesis is based on generalized sheet transition conditions (GSTCs) with a bianisotropic surface susceptibility tensor model of the metasurface structure. We first place metasurfaces in a proper historical context and describe the GSTC technique with some fundamental susceptibility tensor considerations. On this basis, we next provide an in-depth development of our susceptibility-GSTC synthesis technique. Finally, we present five recent metasurface concepts and applications, which cover the topics of birefringent transformations, bianisotropic refraction, light emission enhancement, remote spatial processing, and nonlinear second-harmonic generation.

scholarly journals Генерация второй гармоники от тонкого цилиндрического слоя. I. Аналитическое решение

2019 ◽  
Vol 126 (6) ◽  
pp. 724
Author(s):  
А.А. Шамына ◽  
В.Н. Капшай
Keyword(s):  
Second Harmonic Generation ◽  
Harmonic Generation ◽  
Second Harmonic ◽  
Plane Electromagnetic Wave ◽  
Finite Size ◽  
Cylindrical Layer ◽  
Dielectric Susceptibility ◽  
Cylindrical Particle ◽  
Susceptibility Tensor ◽  
Nonlinear Dielectric

In the Rayleigh–Gans–Debye approximation an analytical solution is obtained for the problem of second harmonic generation by a plane electromagnetic wave with elliptical polarization from a thin optically nonlinear layer on the surface of a cylindrical dielectric particle of finite size placed in a dielectric. The result is presented in tensor and vector forms in general case, in which the nonlinear dielectric susceptibility tensor has four independent components (one chiral and three non-chiral). For the first time it is shown that at generation from the end plane surfaces of a cylindrical particle the contribution of chiral components differs in phase from that of non-chiral components. It is also found that for small linear dimensions of the cylindrical particle (height and radius of the base), the radiation due to the chiral component of the second-order nonlinear dielectric susceptibility tensor makes a dominant contribution to the second harmonic generation from a non-linear cylindrical layer (end and side surfaces).

scholarly journals Anisotropic PCL nanofibers embedded with nonlinear nanocrystals as strong generators of polarized second harmonic light and piezoelectric currents

2020 ◽  
Vol 2 (3) ◽  
pp. 1206-1213
Author(s):  
César R. Bernardo ◽  
Rosa M. F. Baptista ◽  
Etelvina de Matos Gomes ◽  
Paulo E. Lopes ◽  
Maria Manuela M. Raposo ◽  
...  
Keyword(s):  
Second Harmonic Generation ◽  
Harmonic Generation ◽  
Second Harmonic ◽  
Susceptibility Tensor ◽  
Tensor Element ◽  
Order Susceptibility

Intense second harmonic generation emission was observed from a single nanofiber, corresponding to an effective 2nd order susceptibility of 80 pm V−1, 4 times greater than the largest 2nd order susceptibility tensor element (21 pm V−1) for a macroscopic 3NA crystal.

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