Enlarging spin-dependent transverse displacement of surface plasmon polaritons focus

Sun, Yongqiang; Zhao, Chunying; Li, Guoqun; Li, Xing; Wang, Sen

doi:10.1364/oe.27.011112

Cited by 11 publications

(13 citation statements)

References 44 publications

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“…where α represent the orientation angle of the slit and r is the distance from the slit [62]. Thus, the phase and amplitude of SPP can be modulated by changing the orientation angle of the slits.…”

Section: Dynamical Focusing Of Sppmentioning

confidence: 99%

“…Besides, considering that the spiral phase is the origin of spin-dependent SPP focusing for the semicircular lens in Figure 3a, introducing additional spiral phase should be able to amplify the transverse displacement. In Figure 3c, orthogonal slit pairs with spatial variant orientation angles are positioned along the semicircular circle [62]. The SPP field generated by an orthogonal slit pair…”

Section: Dynamical Focusing Of Sppmentioning

confidence: 99%

“…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%

“…(a) Polarization-controlled focusing of SPP with semicircular slits[58]; (b) Spin-selected SPP focusing with vertically arranged nanoslits[46]; (c) Enlarging the spin-dependent transverse shift of SPP focus by introducing additional spiral phase[62]; (d) Multiple-wavelength focusing of SPP with a nonperiodic nanoslit coupler[81]; (e)Switchable SPP focusing by changing either the wavelength or polarization of incident light[64]. Reproduced with permissions from:[58], APS, 2008,[46], OSA, 2015,[62], OSA, 2019,[81], ACS, 2011,[64], ACS, 2015.…”

mentioning

confidence: 99%

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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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Section: Dynamical Focusing Of Sppmentioning

confidence: 99%

Section: Dynamical Focusing Of Sppmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

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Dynamical Manipulation of Surface Plasmon Polaritons

Wang

Zhao

2019

Applied Sciences

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“…Propagating along the two-dimensional (2D) metal/dielectric interface, surface plasmon polaritons (SPPs) with the subwavelength, field confinement, and field enhancement features have been regarded as a powerful platform to realize nanocircuit for on-chip communication and computation [1][2][3]. Nanodevices with various functionalities, ranging from focusing [4][5][6][7], vortex generation [8][9][10][11], and hologram generation [12,13] to light bending [14][15][16][17], unidirectional propagation [18][19][20][21], and logic operation [22,23],are demonstrated.…”

Section: Introductionmentioning

confidence: 99%

The Interference Pattern of Plasmonic and Photonic Modes Manipulated by Slit Width

Tang

Zhang

et al. 2020

Nanomaterials

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We demonstrate that the interference pattern of the plasmonic and photonic modes can be controlled by changing the slit width of a square slit structure. Based on the analyses of the plasmonic and photonic modes of slits with different widths, we theoretically derived the expressions of wavefield generated by a square slit. A far-field scattered imaging system is utilized to collect the intensity distribution experimentally. Various interference patterns, including stripes, square-like lattice array, and diamond-like lattice array, have been observed by adjusting the slit widths. In addition, the results were validated by performing finite-difference time-domain simulations, which are consistent with the theoretical and experimental results.

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Planar Spoof Surface Plasmon Polariton Antenna by Using Transmissive Phase Gradient Metasurface

Wang

Cai

et al. 2020

Annalen der Physik

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Spoof surface plasmon polariton (SSPP) antennas are of particular importance in communication and radar systems. Currently available SSPP radiation devices are limited to low performance with high side‐lobes because it is extremely challenging to accurately control the wave vector of SSPP and the inherent momentum mismatch between the SSPP and spatial waves. Inspired by the optical principle of reversibility, high‐performance radiation control of SSPP is proposed to be achieved with transmissive phase gradient metasurface (TPGM). The TPGM, placed a meticulously optimized distance above the SSPP propagation structure, can provide an additional opposite wave vector to match the momentum between the SSPP and spatial waves. When the propagating SSPP transmits on the TPGM, it can be decoupled into the free space accurately and flexibly. Numerical results coincide well with the measurements, indicating that the radiation control of SSPP achieves high‐performance and low side‐lobe within 9 to 10.5 GHz with the measured radiation efficiency higher than 50%. The measured maximum efficiency appears at 9.8 GHz for 69%. Thanks to the flexible and accurate manipulation of the dispersion relation of SSPP provided by TPGM, the findings may open an avenue in achieving larger angle scanning antenna.

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Enlarging spin-dependent transverse displacement of surface plasmon polaritons focus

Cited by 11 publications

References 44 publications

Dynamical Manipulation of Surface Plasmon Polaritons

Dynamical Manipulation of Surface Plasmon Polaritons

The Interference Pattern of Plasmonic and Photonic Modes Manipulated by Slit Width

Planar Spoof Surface Plasmon Polariton Antenna by Using Transmissive Phase Gradient Metasurface

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