Observation and explanation of polarization-controlled focusing of terahertz surface plasmon polaritons

Wang, Sen; Wang, Xinke; Zhao, Feng; Qu, Shiliang; Zhang, Yan

doi:10.1103/physreva.91.053812

Cited by 15 publications

(18 citation statements)

References 22 publications

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“…Thus, different functionalities can be realized by changing the shape of the aperture or modulating the parameters of the incident light. Various SPP devices including SPP lens [9,10], SPP vortex lens [11], and SPP airy beam generator [12] have been designed and demonstrated experimentally in the visible, terahertz (THz) [13,14], and microwave regions [15].…”

Section: Introductionmentioning

confidence: 99%

Metasurface Lens for both Surface Plasmon Polaritons and Transmitted Wave

Wang

et al. 2016

Plasmonics

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Metasurface lenses which could simultaneously focus both surface plasmon polaritons (SPPs) and transmitted wave are designed. This kind of device is composed of slit antennas and is optimized with the simulated annealing algorithm to realize a single-focus or double-focus lens. Interestingly, the focusing of SPPs is polarization dependent while the focusing of the transmitted wave is immune from the polarization of incident light. The proposed methodology may inspire more designs of device steering both surface wave and transmitted wave.

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Section: Introductionmentioning

confidence: 99%

Metasurface Lens for both Surface Plasmon Polaritons and Transmitted Wave

Wang

et al. 2016

Plasmonics

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“…Particularly, for circularly polarized light, the SPPs generated by subwavelength slits are imprinted with a spin-dependent Pancharatnam-Berry (PB) phase which can be tuned by changing the orientation angle of the slits [46,47]. Polarization-controlled dynamical SPP excitation [48][49][50][51][52][53][54][55][56], SPP focusing [46,[57][58][59][60][61][62][63][64][65][66], SPP vortex [21,44,[67][68][69][70][71][72][73], SPP nondiffracting beams [74][75][76], and SPP holography [77,78] have been 2 of 17 realized. Besides, the other degrees of freedom of light-including the wavelength, topological charge, and the spatial frequency-can be taken advantage of to actively control the SPP field [79][80][81][82][83][84][85][86] as well.…”

Section: Introductionmentioning

confidence: 99%

Dynamical Manipulation of Surface Plasmon Polaritons

Wang

Zhao

2019

Applied Sciences

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As the fundamental and promising branch of nanophotonics, surface plasmon polaritons (SPP) with the ability of manipulating the electromagnetic field on the subwavelength scale are of interest to a wide spectrum of scientists. Composed of metallic or dielectric structures whose shape and position are carefully engineered on the metal surface, traditional SPP devices are generally static and lack tunability. Dynamical manipulation of SPP is meaningful in both fundamental research and practical applications. In this article, the achievements in dynamical SPP excitation, SPP focusing, SPP vortex, and SPP nondiffracting beams are presented. The mechanisms of dynamical SPP devices are revealed and compared, and future perspectives are discussed.

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“…However, their excitation and propagation behaviors are similar. By using a ZnTe crystal-based detection system, manipulations of terahertz SWs in metasurfaces have been experimentally characterized [23,24] . Additionally, surface roughness or dielectric layers have been predicted to be able to bind the terahertz SWs more tightly to the surface [22,25] .…”

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confidence: 99%

Near-field manipulation of terahertz surface waves by metasurfaces [Invited]

Xu¹,

Zhang²,

Xu³

et al. 2018

Chin. Opt. Lett.

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Surface waves (SWs) are a special form of electromagnetic waves that travel along the boundary between a metal and a dielectric. The special optical properties of SWs render them very attractive in applications, such as subdiffractional lithography, novel biochemical sensors, and ultrafast integrated circuitries. Herein, we present a review of our recent progress in excitation and manipulation of terahertz SWs due to interference or coupling between a pair of slit resonators in metasurfaces, showing the ability to devise ultrathin and compact plasmonic components.

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Observation and explanation of polarization-controlled focusing of terahertz surface plasmon polaritons

Cited by 15 publications

References 22 publications

Metasurface Lens for both Surface Plasmon Polaritons and Transmitted Wave

Metasurface Lens for both Surface Plasmon Polaritons and Transmitted Wave

Dynamical Manipulation of Surface Plasmon Polaritons

Near-field manipulation of terahertz surface waves by metasurfaces [Invited]

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