Multipolar Third-Harmonic Generation Driven by Optically Induced Magnetic Resonances

Smirnova, Daria; Khanikaev, Alexander B.; Smirnov, L. A.; Kivshar, Yuri S.

doi:10.1021/acsphotonics.6b00036

Cited by 101 publications

(101 citation statements)

References 79 publications

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“…It has been acknowledged that the intrinsic microscopic nonlinear electric polarizability of resonant nanoparticles may induce magnetic nonlinear effects. 111 The presence of both electric and magnetic nonlinearities enhances the interference effects, which in turn increases the efficiency and controls the polarization of the nonlinear processes, as well. 89,112 Another important resonance mode that can be achieved in dielectric nanostructures by possessing more complex design is the Fano resonance.…”

Section: Multipolar Resonances In All-dielectric Systemsmentioning

confidence: 99%

Nonlinear optics in all-dielectric nanoantennas and metasurfaces: a review

2019

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Freed from phase-matching constraints, plasmonic metasurfaces have contributed significantly to the control of the optical nonlinearity and enhancing the nonlinear generation efficiency by engineering subwavelength meta-atoms. However, the high dissipative losses and the inevitable thermal heating limit their applicability in nonlinear nanophotonics. All-dielectric metasurfaces, supporting both electric and magnetic Mie-type resonances in their nanostructures, have appeared as a promising alternative to nonlinear plasmonics. High-index dielectric nanostructures, allowing additional magnetic resonances, can induce magnetic nonlinear effects, which along with electric nonlinearities increase the nonlinear conversion efficiency. In addition, low dissipative losses and high damage thresholds provide an extra degree of freedom for operating at high pump intensities, resulting in a considerable enhancement of the nonlinear processes. In this review, we discuss the current state-of-the-art in the intensely developing area of all-dielectric nonlinear nanostructures and metasurfaces, including the role of Mie modes, Fano resonances and anapole moments for harmonic generation, wave mixing, and ultrafast optical switching. Furthermore, we review the recent progress in the nonlinear phase and wavefront control using all-dielectric metasurfaces. We discuss techniques to realize all-dielectric metasurfaces for multifunctional applications and generation of secondorder nonlinear processes from CMOS compatible materials.

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Section: Multipolar Resonances In All-dielectric Systemsmentioning

confidence: 99%

Nonlinear optics in all-dielectric nanoantennas and metasurfaces: a review

2019

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“…The underlying conceptual framework is to use arrays of meta-atoms with judiciously engineered shape and lattice structure, with topologically nontrivial features arising from pseudospin degrees of freedom. It bridges fundamental physics of topological phases with resonant nanophotonics and multipolar electrodynamics [15,16]. Topological metasurfaces could form a ground for a new class of ultra-thin devices with functionalities based on novel physical principles through engineering light-matter interactions in synthetic photonic potentials [17].…”

mentioning

confidence: 99%

Third-Harmonic Generation in Photonic Topological Metasurfaces

et al. 2019

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We study nonlinear effects in two-dimensional photonic metasurfaces supporting topologicallyprotected helical edge states at the nanoscale. We observe strong third-harmonic generation mediated by optical nonlinearities boosted by multipolar Mie resonances of silicon nanoparticles. Variation of the pump-beam wavelength enables independent high-contrast imaging of either bulk modes or spin-momentum-locked edge states. We demonstrate topology-driven tunable localization of the generated harmonic fields and map the pseudospin-dependent unidirectional waveguiding of the edge states bypassing sharp corners. Our observations establish dielectric metasurfaces as a promising platform for the robust generation and transport of photons in topological photonic nanostructures.Topological photonics describes optical structures with the properties analogous to electronic topological insulators [1]. These systems are distinguished by bulk band gaps that host disorder-robust states localized at edges or interfaces and provide a novel approach for designing non-reciprocal or localized modes for optical isolators, photonic-crystal waveguides, and lasers. Since the original demonstration of backscattering-immune photonic topological edge states with the use of a gyrotropic microwave photonic crystal under a strong magnetic field [2], there has been a concerted effort towards realizing topological photonics at the nanoscale. Recently suggested optical designs compatible with non-magnetic alldielectric structures [3][4][5][6][7][8] are now emerging as a promising platform for quantum and nonlinear topological photonics [9][10][11][12].Stimulated by the progress in nanofabrication techniques, a new favourable ground for topological photonics based on dielectric nanoparticles with high refractive index has recently emerged [13,14]. Strong optical resonances and low Ohmic losses make it feasible for practical implementation of topological order for light at subwavelength scales. The underlying conceptual framework is to use arrays of meta-atoms with judiciously engineered shape and lattice structure, with topologically nontrivial features arising from pseudospin degrees of freedom. It bridges fundamental physics of topological phases with resonant nanophotonics and multipolar electrodynamics [15,16]. Topological metasurfaces could form a ground for a new class of ultra-thin devices with functionalities based on novel physical principles through engineering light-matter interactions in synthetic photonic potentials [17]. Their pseudospindependent physics may be useful for manipulation of internal degrees of freedom of light such as polarization and angular momentum.However, the experimental characterization of topological photonic structures becomes much more challenging at the nanoscale. Most implementations so far have been limited to indirect probing of topological states such as transmission spectra [11,[18][19][20], which cannot provide spatially-resolved information about the edge modes and suffer from input/output coupling losses. ...

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“…The dramatic enhancement is observed when the double-resonance condition is fulfilled [37][38][39] ical modeling performed with the finite-element solver COMSOL Multiphysics, following the procedure applied in Refs. [9,21,22,25]. The multipolar amplitude coefficients are then numerically retrieved and reproduce Figs.…”

Section: Second-harmonic Generation Formalismmentioning

confidence: 86%

Second-harmonic generation in Mie-resonant dielectric nanoparticles made of noncentrosymmetric materials

et al. 2019

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We develop a multipolar theory of second-harmonic generation (SHG) by dielectric nanoparticles made of noncentrosymmetric materials with bulk quadratic nonlinearity. We specifically analyze two regimes of optical excitation: illumination by a plane wave and single-mode excitation, when the laser pump drives the magnetic dipole mode only. Considering two classes of nonlinear crystalline solids (dielectric perovskite material and III-V semiconductor), we apply a symmetry approach to derive selection rules for the multipolar composition of the nonlinear radiation. The developed description can be used for design of efficient nonlinear optical nanoantennas with reconfigurable radiation characteristics.

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Multipolar Third-Harmonic Generation Driven by Optically Induced Magnetic Resonances

Cited by 101 publications

References 79 publications

Nonlinear optics in all-dielectric nanoantennas and metasurfaces: a review

Nonlinear optics in all-dielectric nanoantennas and metasurfaces: a review

Third-Harmonic Generation in Photonic Topological Metasurfaces

Second-harmonic generation in Mie-resonant dielectric nanoparticles made of noncentrosymmetric materials

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