Generating a plasmonic vortex field with arbitrary topological charges and positions by meta-nanoslits

Tang, Baojie; Zhang, Baifu; Ding, Jianping

doi:10.1364/ao.58.000833

Cited by 14 publications

(9 citation statements)

References 31 publications

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“…Recently, the advances in processing technology have driven subwavelength optics, and subwavelength-plasmonic-structure-based metasurfaces have also been reported to generate plasmonic vortices with more compactness [183,241,292,293] . Subwavelength plasmonic slits in Archimedes spiral-shaped arrangements, which simultaneously manipulate the propagation phase and geometric phase, realize plasmonic vortex lenses with a high degree of design freedom that can achieve the generation of multiple plasmonic vortex superpositions under a certain spin channel [184,260,263,265,294,295] . As illustrated in Figs.…”

Section: On-chip Tailoring Devicesmentioning

confidence: 99%

Meta-optics inspired surface plasmon devices

Lang

Jiang

et al. 2023

Photonics Insights

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Surface plasmons (SPs) are electromagnetic surface waves that propagate at the interface between a conductor and a dielectric. Due to their unique ability to concentrate light on two-dimensional platforms and produce very high local-field intensity, SPs have rapidly fueled a variety of fundamental advances and practical applications. In parallel, the development of metamaterials and metasurfaces has rapidly revolutionized the design concepts of traditional optical devices, fostering the exciting field of meta-optics. This review focuses on recent progress of meta-optics inspired SP devices, which are implemented by the careful design of subwavelength structures and the arrangement of their spatial distributions. Devices of general interest, including coupling devices, on-chip tailoring devices, and decoupling devices, as well as nascent SP applications empowered by sophisticated usage of meta-optics, are introduced and discussed.

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Section: On-chip Tailoring Devicesmentioning

confidence: 99%

Meta-optics inspired surface plasmon devices

Lang

Jiang

et al. 2023

Photonics Insights

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“…A PVL with a multiple arm spiral has been widely used to generate a PV due to its compactness and substantial eld enhancement in an evanescent eld region. [34][35][36][37][38][39][40] The inscribed CG as a diffractor inside the PVL could bring PV away from the surface and cause the primary ring to rotate the microparticle in the far-eld region. To the best of our knowledge, research about a CG inscribed in the PV tweezers for rotation in the far-eld region has never been conducted.…”

Section: Introductionmentioning

confidence: 99%

Dynamic single microparticle manipulation in the far-field region using plasmonic vortex lens multiple arms with a circular groove

2023

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“…For example, a plasmonic metasurface composed of an Archimedean spiral distribution of cross units can excite spin-dependent PVs at the center of its structure [32], and a metasurface composed of multiple rectangular nanoslits enables generation of higher order SPP vortices [33]. In addition, plasmonic metasurfaces can also be used to generate spin-independent PVs [34,35], and PVs with asymmetric intensity distributions at the centers of their structures or change the PV generation location [36,37]. However, in these on-chip plasmonic nanostructures, it is difficult to control the topological charge of the generated PVs freely.…”

Section: Introductionmentioning

confidence: 99%

Controllable plasmonic vortex sequence with on-chip discrete-slit-based metalens

Zhang

Wang

et al. 2023

New J. Phys.

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Like free-space vortex beams, surface plasmon polaritons can carry orbital angular momentum to form plasmonic vortices (PVs). Recently, research interest in PV fundamentals and applications has increased. However, generating and manipulating the topological charges of PVs over wide ranges using on-chip devices remains challenging. Here, we propose an on-chip plasmonic metalens structure to generate tunable PV sequence with controllable topological charges at discrete wavelengths. When compared with conventional spiral-slit structures, the designed metalens has additional structural parameters that bring more degrees of freedom to control the range and interval of the topological charge distribution of the PV sequence. Analytical and simulation methods are used to verify the metalens’ functionality. It is proved that the topological charges of the generated PV sequence are symmetrically distributed about the fundamental mode (l = 0), which cannot be realized by a traditional Archimedean helix. In addition, the normalized powers of the PV sequence are all above 0.8, showing that the designed metalens structure has potential for use as an on-chip optical vortex comb device. This work has potential applications in on-chip optical information processing, integrated optical communications, and optical tweezers.

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Generating a plasmonic vortex field with arbitrary topological charges and positions by meta-nanoslits

Cited by 14 publications

References 31 publications

Meta-optics inspired surface plasmon devices

Meta-optics inspired surface plasmon devices

Dynamic single microparticle manipulation in the far-field region using plasmonic vortex lens multiple arms with a circular groove

Controllable plasmonic vortex sequence with on-chip discrete-slit-based metalens

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