Selective excitation of localized surface plasmons by structured light

Litvin, Igor A.; Mueller, Niclas S.; Reich, Stéphanie

doi:10.1364/oe.399225

Cited by 12 publications

(5 citation statements)

References 40 publications

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“…Lastly, as mentioned in the introduction, SPPs enable focusing below the diffraction limit of free-space light. In the context of vortices, this is, for example, of interest for studying their interaction with plasmonic nanostructures and even with molecules and atoms, which is difficult to experimentally investigate with visible photonic vortices. − …”

Section: Plasmonic Orbital Angular Momentummentioning

confidence: 99%

Orbital Angular Momentum in Nanoplasmonic Vortices

et al. 2023

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In the past decade, optical orbital angular momentum (OAM) has entered the field of plasmonics in the form of surface-confined vortices, generating vast interest. Here we give an overview of the field, starting with the pioneering analytic and experimental investigations of plasmonic OAM. We describe the advances leading to the study of suboptical cycle dynamics in time-resolved experiments and the investigation of angular momentum light–matter interactions through the mixing of circularly polarized light with plasmonic vortices. We describe how additional degrees of freedom can be controlled with metasurfaces and other design techniques leading to the complete spatial and temporal modularization of surface-confined OAM. We review maturing applications of plasmonic vortices, such as plasmonic tweezers for the selective trapping and rotation of microparticles and broadband multiplexing of angular momentum light beams for high-capacity optical communications. The major advances in the field, from the first observation to complete modularization, position the controlled surface-confined OAM at the forefront of light–matter science.

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Section: Plasmonic Orbital Angular Momentummentioning

confidence: 99%

Orbital Angular Momentum in Nanoplasmonic Vortices

et al. 2023

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“…In [33], the multiwave interaction in the metamaterial was studied to be as a coupled resonator although not easy for fabrication. In [34], the scattering and absorption properties of nanostructures were shown theoretically that they could be controlled by incident wave polarization. However, the control and realization of the investigated structure are not simple.…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

Light harvesting enhancement using metal nanoparticles

Yaseen¹

2021

EEJET

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Metal nanoparticles are very important for their optical properties when they interact with light. Metal nanoparticles have the ability to confine the collective oscillation of electrons, which is called localized surface plasmon resonance (LSPR). In this work, silver nanoparticles have been proposed to enhance light harvesting, which could be useful for different applications. Metal nanoparticles such as gold and silver nanoparticles have the ability to concentrate field in a very small space. In this study, gold and silver nanoparticles optical response was investigated using frequency domain simulation. The resonance wavelength of gold and silver nanoparticles was about 550 nm and 400 nm, respectively. Silver nanoparticles showed better LSPR performance than gold nanoparticles. Therefore, silver nanoparticles were chosen for optical field enhancement. Here silver nanoparticles were placed on a silicon substrate for optical field enhancement. To study the effect of size on the optical response of silver nanoparticles, the optical properties of this structure with different silver nanoparticles diameter values were investigated. Silver nanoparticles with 40 nm diameters showed a better optical response. To study the effect of the distance between silver nanoparticles on the optical response, different gap values were put between silver nanoparticles. The gap value of 4 nm showed a better optical response. The obtained results showed that the localized field is strongly dependent on the metal type, size, and space between nanoparticles. In addition, the optical field concentration can be controlled by tuning the size and space between silver nanoparticles. This will support localized field enhancement. The enhanced localized field will increase the field absorption near the surface, which can be beneficial for energy harvesting applications such as solar cells and detectors

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“…The vector beam shows a unique excitation field and thus provides the novel selection rule that is not identical with the conventional one. For instance, the cylindrical vector and Laguerre–Gaussian beams exhibit spatially varying polarization and phase distributions, respectively, and have demonstrated for excitation of dark plasmon modes. − …”

Section: Introductionmentioning

confidence: 99%

Selective Excitation of Dark Plasmon Modes Using Cylindrical Vector Beams Studied by Microscopic Imaging of Nonlinear Photoluminescence

Hasegawa,

Ichikawa,

Imura

2024

J. Phys. Chem. C

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Noble metal nanostructures exhibit multiple plasmon modes with different spatial characteristics and resonance energies. Plasmons confine electromagnetic fields in the vicinity of nanostructures, and the confined field has been utilized for various applications, such as sensing and chemical reactions. The plasmon mode with no net polarization is optically dark, and thus, it is not accessible by plane wave excitation. The dark plasmon mode exhibits a long dephasing time due to suppression of the radiative decay process. As this feature is advantageous for applications, development of a novel excitation scheme for dark modes is indispensable. Optical selection rules of a plasmon mode are determined by the spatial symmetry of the plasmon mode and excitation field. Cylindrical vector beams possess unique spatial polarization characteristics that are different from the linearly and circularly polarized light and are capable of the excitation of the dark plasmon modes. This study examines the nonlinear photoluminescence properties of gold nanoplates excited by radially and azimuthally polarized beams and demonstrates that the spatial characteristics of the excitation images are strongly dependent on the excitation field. Electromagnetic simulations support the findings that selective excitation of the dark plasmon mode is feasible by the cylindrical vector beams.

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Selective excitation of localized surface plasmons by structured light

Cited by 12 publications

References 40 publications

Orbital Angular Momentum in Nanoplasmonic Vortices

Orbital Angular Momentum in Nanoplasmonic Vortices

Light harvesting enhancement using metal nanoparticles

Selective Excitation of Dark Plasmon Modes Using Cylindrical Vector Beams Studied by Microscopic Imaging of Nonlinear Photoluminescence

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