Disorder-Induced Phase Transitions in the Transmission of Dielectric Metasurfaces

Rahimzadegan, Aso; Arslan, Dennis; Suryadharma, Radius N. S.; Fasold, Stefan; Falkner, Matthias; Pertsch, Thomas; Staude, Isabelle; Rockstuhl, Carsten

doi:10.1103/physrevlett.122.015702

Cited by 37 publications

(30 citation statements)

References 57 publications

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“…Quite interesting results have also been reported for lasing [64,65] and solar energy harvesting [62,[66][67][68] in various types of quasi-periodic and aperiodic structures. However, it is a well known fact that the presence of imperfections in 1D chains of NPs [69,70], 2D structures [71][72][73][74][75][76], 3D metamaterials [77], and fractal aggregates [78] may lead to various intriguing effects.…”

Section: Introductionmentioning

confidence: 99%

Collective lattice resonances in disordered and quasi-random all-dielectric metasurfaces

et al. 2019

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Collective lattice resonances in disordered 2D arrays of spherical Si nanoparticles (NPs) have been thoroughly studied within the framework of the coupled dipole approximation. Three types of defects have been analyzed: positional disorder, size disorder, and quasi-random disorder. We show that the positional disorder strongly suppresses either the electric dipole (ED) or the magnetic dipole (MD) coupling depending on the axis along which the NPs are shifted. Contrary, size disorder strongly affects only the MD response, while the the ED resonance can be almost intact, depending on the lattice configuration. Finally, random removing of NPs from an ordered 2D lattice reveals a quite surprising result: hybridization of the ED and MD resonances with lattice modes remains observable even in the case of random removing of up to 84% of the NPs from the ordered array. Reported results could be important for rational design and utilization of metasurfaces, solar cells and other all-dielectric photonic devices.

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Section: Introductionmentioning

confidence: 99%

Collective lattice resonances in disordered and quasi-random all-dielectric metasurfaces

et al. 2019

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“…It has been pointed out that complicated coupled configurations involving multiple meta-atoms can be efficiently studied by describing the meta-atoms in terms of α-tensor (or T-matrix) and using the multiple-scattering theory (MST) [17]. Electromagnetically coupled discrete scattering objects can be self-consistently treated to describe for collective responses of multiple particles [22][23][24] and periodic particle arrays [25][26][27][28][29][30][31], and this approach significantly reduces the calculation loads for complicated, random [32,33], or multi-scale systems [34][35][36].…”

Section: Introductionmentioning

confidence: 99%

Describing Meta-Atoms Using the Exact Higher-Order Polarizability Tensors

Mun

Jang

et al. 2020

ACS Photonics

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In nanophotonics, multipole approach has become an indispensable theoretical framework for analyzing subwavelength meta-atoms and their radiation properties. Thus far, induced multipole moments have frequently used to illustrate the radiating properties of the meta-atoms, but they are excited at a specific illumination and do not fully represent anisotropic meta-atoms. On the other hand, dynamic polarizability (α) tensors contain complete scattering information of the metaatoms, but have not often been considered due to complicated retrieval procedures. In this study, we suggest that exact higher-order α-tensor can be efficiently obtained from T-matrix using simple basis transformation. These higher-order α-tensors are necessary to describe recently reported coupled plasmonic and high-refractive-index particles, which we demonstrate from their retrieved α-tensors. Finally, we show that description of meta-atoms using α-tensors incorporated with multiple-scattering theory vastly extends the applicability of the multipole approach in nanophotonics, allowing accurate and efficient depiction of complicated, random, multi-scale systems. Usage: Preprint.

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“…Mie theory is one of the backbones of research in metamaterials and metasurfaces [24][25][26][27][28][29][30][31][32][33][34]. Introducing a general Mie model to include absorbing particles opens new ways in the optical design for thermal cooling [35,36], thermal emission [37][38][39], perfect absorption [40][41][42][43], non-local homogenization [44,45], metasurface holography [46][47][48][49], disordered photonics [50][51][52], optical manipulation [53][54][55][56][57], and many others.…”

Section: Introductionmentioning

confidence: 99%

Minimalist Mie coefficient model

Rahimzadegan¹,

Alaee²,

Rockstuhl³

et al. 2020

Opt. Express

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When considering light scattering from a sphere, the ratios between the expansion coefficients of the scattered and the incident field in a spherical basis are known as the Mie coefficients. Generally, Mie coefficients depend on many degrees of freedom, including the dimensions and electromagnetic properties of the spherical object. However, for fundamental research, it is important to have easy expressions for all possible values of Mie coefficients within the existing physical constraints and which depend on the least number of degrees of freedom. While such expressions are known for spheres made from non-absorbing materials, we present here, for the first time to our knowledge, corresponding expressions for spheres made from absorbing materials. To illustrate the usefulness of these expressions, we investigate the upper bound for the absorption cross section of a trimer made from electric dipolar spheres. Given the results, we have designed a dipolar ITO trimer that offers a maximal absorption cross section. Our approach is not limited to dipolar terms, but indeed, as demonstrated in the manuscript, can be applied to higher order terms as well. Using our model, one can scan the entire accessible parameter space of spheres for specific functionalities in systems made from spherical scatterers.

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Disorder-Induced Phase Transitions in the Transmission of Dielectric Metasurfaces

Cited by 37 publications

References 57 publications

Collective lattice resonances in disordered and quasi-random all-dielectric metasurfaces

Collective lattice resonances in disordered and quasi-random all-dielectric metasurfaces

Describing Meta-Atoms Using the Exact Higher-Order Polarizability Tensors

Minimalist Mie coefficient model

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