On loss compensation, amplification and lasing in metallic metamaterials

Droulias, Sotiris; Koschny, Thomas; Kafesaki, Maria; Soukoulis, Costas M.

doi:10.1177/1847980418817947

Cited by 10 publications

(6 citation statements)

References 41 publications

(72 reference statements)

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“…194 Various other designs for gain-assisted molecular metamaterials were considered, e.g. based on split-ring, 199,200 splitring/rectangular opening, 198 and double-split-ring 201 resonators, 3D SRR configuration producing a toroidal resonant structure, 202 and negative index materials superlattices. 203 Although there is a lack of experimental demonstrations of this type of dye-functionalized metamaterial lasing, full loss compensation in the regime of a negative real part of the effective refractive index of a fishnet metamaterial has been shown (Figure 11b).…”

Section: Loss Compensation Amplification and Lasing In Fishnet Plasmo...mentioning

confidence: 99%

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Molecular Plasmonics with Metamaterials

et al. 2022

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Molecular plasmonics, the area which deals with the interactions between surface plasmons and molecules, has received enormous interest in fundamental research and found numerous technological applications. Plasmonic metamaterials, which offer rich opportunities to control the light intensity, field polarization, and local density of electromagnetic states on subwavelength scales, provide a versatile platform to enhance and tune light-molecule interactions. A variety of applications, including spontaneous emission enhancement, optical modulation, optical sensing, and photoactuated nanochemistry, have been reported by exploiting molecular interactions with plasmonic metamaterials. In this paper, we provide a comprehensive overview of the developments of molecular plasmonics with metamaterials. After a brief introduction to the optical properties of plasmonic metamaterials and relevant fabrication approaches, we discuss light-molecule interactions in plasmonic metamaterials in both weak and strong coupling regimes. We then highlight the exploitation of molecules in metamaterials for applications ranging from emission control and optical modulation to optical sensing. The role of hot carriers generated in metamaterials for nanochemistry is also discussed. Perspectives on the future development of molecular plasmonics with metamaterials conclude the review. The use of molecules in combination with designer metamaterials provides a rich playground both to actively control metamaterials using molecular interactions and, in turn, to use metamaterials to control molecular processes.

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Section: Loss Compensation Amplification and Lasing In Fishnet Plasmo...mentioning

confidence: 99%

“…Various other designs for gain-assisted molecular metamaterials were considered, e.g. based on split-ring, , split-ring/rectangular opening, and double-split-ring resonators, 3D SRR configuration producing a toroidal resonant structure, and negative index materials superlattices …”

Section: Plasmonic Metamaterials With Gain Mediamentioning

confidence: 99%

Molecular Plasmonics with Metamaterials

et al. 2022

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“…Incorporating such materials changes the metamaterial properties, thereby altering the coupling to the gain material until reaching a steady state. The loss compensation relies on the strong coupling between the meta-atoms of the metamaterials and the gain material [119].…”

Section: Embedding the Gain Materials For Loss Compensationmentioning

confidence: 99%

Overview of Approaches for Compensating Inherent Metamaterials Losses

et al. 2022

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Metamaterials are synthetic composite structures with extraordinary electromagnetic properties not readily accessible in ordinary materials. These media attracted massive attention due to their exotic characteristics. However, several issues have been encountered, such as the narrow bandwidth and inherent losses that restrict the spectrum and the variety of their applications. The losses have become the principal limiting factor when employing metamaterials in real-world applications. Consequently, overcoming them is crucially important and of practical necessity. This paper discusses the practical applications of metamaterials in constructing functional devices and the effects of the losses on such devices. In more depth, it reviews the available approaches for reducing the metamaterial losses developed over the last two decades in the light of available literature. These approaches include the utilization of the principles of electromagnetically induced transparency (EIT), geometric tailoring of the metamaterial structures, and embedding gain materials. Further, computational optimization techniques, such as particle swarm optimization (PSO) and genetic algorithm (GA), are also discussed to design low-loss metamaterials. The EIT-like metamaterial and the including of gain materials are systematic and universal approaches exhibiting low loss approaching zero. In contrast, the other two are not systematic and universal approaches.

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“…The interested reader may refer to several recent good review papers published on active metamaterials [75]- [77], active plasmonics [78]- [80], loss compensation [81], nanolasers [57], [58], [82]- [86], spasers [64] as well as on -symmetry in photonics [68], [87] and quantum plasmonics [88]. It worth to mention that sometimes the term "active" in nanophotonics is used to indicate tuning of material properties (like the refractive index in phase-change materials) to control or reconfigure plasmon propagation [89]- [94].…”

Section: Introductionmentioning

confidence: 99%

Active Nanophotonics

Krasnok

Alù

2020

Proc. IEEE

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Recent progress in nanofabrication has led to tremendous technological developments in nanophotonics, which rely on the interaction of light with nanostructured matter. Nanophotonics has experienced a large surge of interest in recent years, from basic research to applied technology.The increased importance of extremely low-energy data processing at ultra-fast speeds has been encouraging the use of light for signal transport and processing. Energy demands and interaction time scales become smaller with the physical size of the nanostructures, hence nanophotonics opens the opportunity of integrating a large number of devices that can generate, control, modulate, sense and process light signals at ultrafast speeds and below femtojoule/bit energy levels.However, losses and diffraction pose fundamental challenges to the fundamental ability of nanophotonic structures to confine light efficiently in smaller and smaller volumes. In this framework, active nanophotonics, which combines the latest advances in nanotechnology with gain materials, has become in recent years a vital area of optics research, both from the physics, material science, and engineering standpoint. In this paper, we review recent efforts in enabling active nanodevices for lasing and optical sources, loss compensation, and to realize new optical functionalities, like -symmetry, exceptional points and nontrivial lasing based on suitably engineered distributions of gain and loss in nanostructures.

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On loss compensation, amplification and lasing in metallic metamaterials

Cited by 10 publications

References 41 publications

Molecular Plasmonics with Metamaterials

Molecular Plasmonics with Metamaterials

Overview of Approaches for Compensating Inherent Metamaterials Losses

Active Nanophotonics

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