Ultrathin plasmonic quarter waveplate using broken rectangular annular metasurface

Zhu, Aijiao; Qian, Qinyu; Yan, Ying; Hu, Jingpei; Zhao, Xiaonan; Wang, Chinhua

doi:10.1016/j.optlastec.2017.01.003

Cited by 10 publications

(6 citation statements)

References 8 publications

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“…Wavelength Efficiency (Average) Bandwidth L-shaped [42] 1550 nm ~0.4 80 nm Metal grating [43] 1450 nm ~0.4 300 nm Rectangular hole [44] 1500 nm ~0.4 ~520 nm Metal [45] 1550 nm ~0.4 120 nm Metal cross [46] 1250 nm 0.85 ~140 nm Table 1. Comparison of the characteristics of the QWP in the near-infrared band.…”

Section: Structure Designmentioning

confidence: 99%

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The Ultra-Large-Bandwidth Cascade Full-Stokes-Imaging Metasurface Based on the Dual-Major-Axis Circular Dichroism Grating

Cheng,

Song

2023

Nanomaterials

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A dual-major-axis grating composed of two metal–insulator–metal (MIM) waveguides with different dielectric layer thicknesses is numerically proposed to achieve the function of the quarter-wave plate with an extremely large bandwidth (1.0–2.2 μm), whose optical properties can be controlled by the Fabry–Pérot (FP) resonance. For the TE incident mode wave, MIM waveguides with large (small) dielectric layer thicknesses control the guided-mode resonant channels of long (short) waves, respectively, in this miniaturized optical element. Meanwhile, for the TM incident mode wave, the propagation wave vector of this structure is controlled by the hybrid mode of two gap-SPPs (gap-surface plasmon polaritons) with different gap thicknesses. We combine this structure with a thick silver grating to propose a circularly polarizing dichroism device, whose effective bandwidth can reach an astonishing 1.65 μm with a circular polarization extinction ratio greater than 10 dB. The full Stokes pixel based on the six-image element technique can almost accurately measure arbitrary polarization states at 1.2–2.8 μm (including elliptically polarized light), which is the largest bandwidth (1600 nm) of the full Stokes large-image element to date in the near-infrared band. In addition, the average errors of the degree of linear polarizations (Dolp) and degree of circular polarizations (Docp) are less than −25 dB and −10 dB, respectively.

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Section: Structure Designmentioning

confidence: 99%

“…L-shaped [42] 1550 nm ~0.4 80 nm Metal grating [43] 1450 nm ~0.4 300 nm Rectangular hole [44] 1500 nm ~0.4 ~520 nm Metal [45] 1550 nm ~0.4 120 nm Metal cross [46] 1250 nm 0.85 ~140 nm Ag grating [39] 1250 nm ~0.7 600 nm This proposal 1600 nm ~0.55 1200 nm…”

Section: Structure Design Wavelength Efficiency (Average) Bandwidthmentioning

confidence: 99%

The Ultra-Large-Bandwidth Cascade Full-Stokes-Imaging Metasurface Based on the Dual-Major-Axis Circular Dichroism Grating

Cheng,

Song

2023

Nanomaterials

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“…By carefully designing the structure and arrangement of the resonators, arbitrarily precise control of incident light can be realized. In the past decade, thanks to the advantages of compactness, lightweight, and arbitrary control over the wavefront, metasurfaces have developed rapidly and have been designed for a variety of applications, such as flat lenses [ 6 , 7 , 8 ], wave-plates [ 9 , 10 , 11 ], holograms [ 12 , 13 , 14 ], and beam splitters [ 15 , 16 , 17 ]. However, in general, once the metasurface is fabricated, its function and optical response range will be fixed, which will limit the practical application of metasurfaces.…”

Section: Introductionmentioning

confidence: 99%

Design of Multifunctional Tunable Metasurface Assisted by Elastic Substrate

Fan

et al. 2022

Nanomaterials

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Metasurfaces with both multifunctionality and tunability hold great application potential in next-generation optical devices. In this paper, we propose a stretchable metasurface composed of arrays of identical dielectric rectangular resonators embedded in the polydimethylsiloxane (PDMS) substrate. It is shown that the metasurface possesses three functions at the operating wavelength of 532 nm. The switching of functions can be implemented by changing the period Px of the metasurface, induced by stretching the PDMS substrate along the x-direction. When the period Px is less than the operating wavelength of 532 nm, the behavior of metasurface can switch between transmissive window and reflective mirror. When the period Px of the metasurface varies from 532 nm to 700 nm, the metasurface act as a dynamic equal-power beam splitter with conversion efficiency higher than 90%, and the corresponding splitting angle can be adjusted from 90° to around 49.5°. Moreover, we achieve the switching of transmissive window/reflective mirror/split-ratio-variable splitter based on the metasurface consisting of arrays of identical L-shaped resonators embedded in the PDMS substrate.

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“…In recent years, metasurfaces have been considered to be promising two-dimensional metamaterials with various geometries, which impart phase for controlling phase, amplitude, and polarization of transmitted or reflected electromagnetic waves in a desired and flexible manner [18][19][20][21][22]. Because of the freedom for wavefront control, metasurfaces have been manufactured to be lenses [23][24][25], waveplates [26][27][28], polarizers [29][30][31][32][33], and so on. Metalens as an alternative of the objective lens was used for laser focusing [23] and further applied for optical trapping [34].…”

Section: Introductionmentioning

confidence: 99%

Optical Trapping and Separation of Metal Nanoparticles by Cylindrical Metalenses With Phase Gradients

Shen

Wang

Liu³

et al. 2020

IEEE Photonics J.

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We proposed a method for driving metal nanoparticles in the focal field by cylindrical metalens with phase gradient. It was found that the introduced gradient phase would not affect the formation of the focal line, where metal nanoparticles can be trapped. While being driven along the direction with the phase gradient, Ag nanoparticles with different sizes, and nanoparticles with different materials (Au and Ag) were successfully separated, respectively. The induced driving force has an approximately linear relationship with the phase gradient. This kind of planar thin structure can be combined with a microfluidic chip to form a miniaturized system for label-free and noncontact sorting of particles or biological cells, and it may find potential applications in biomedicine.

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Ultrathin plasmonic quarter waveplate using broken rectangular annular metasurface

Cited by 10 publications

References 8 publications

The Ultra-Large-Bandwidth Cascade Full-Stokes-Imaging Metasurface Based on the Dual-Major-Axis Circular Dichroism Grating

The Ultra-Large-Bandwidth Cascade Full-Stokes-Imaging Metasurface Based on the Dual-Major-Axis Circular Dichroism Grating

Design of Multifunctional Tunable Metasurface Assisted by Elastic Substrate

Optical Trapping and Separation of Metal Nanoparticles by Cylindrical Metalenses With Phase Gradients

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