All‐Dielectric Metasurfaces for Simultaneous Giant Circular Asymmetric Transmission and Wavefront Shaping Based on Asymmetric Photonic Spin–Orbit Interactions

Zhang, Fei; Pu, Mingbo; Li, Xiong; Gao, Ping; Ma, Xiaoliang; Luo, Jun; Yu, Hong-Lin; Luo, Xiangang

doi:10.1002/adfm.201704295

Cited by 314 publications

(205 citation statements)

References 42 publications

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“…The study of metasurface holography has been carried out to increase the amount of information on one metasurface. This method is made possible by using a new structure, controlling the properties of incident light, or using a reflection space as modulating range with transmission space [21,[52][53][54][55][56][57][58][59]. The phase control via PB phase is well known to have a broadband characteristic [21,29,51].…”

Section: Metasurface Holography With More-than-one Informationmentioning

confidence: 99%

Progresses in the practical metasurface for holography and lens

Sung

Lee

2019

Nanophotonics

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Metasurfaces have received enormous attention thanks to their unique ability to modulate electromagnetic properties of light in various frequency regimes. Recently, exploiting its fabrication ease and modulation strength, unprecedented and unique controlling of light that surpasses conventional optical devices has been suggested and studied a lot. Here, in this paper, we discuss some parts of this trend including holography, imaging application, dispersion control, and multiplexing, mostly operating for optical frequency regime. Finally, we will outlook the future of the devices with recent applications of these metasurfaces.

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Section: Metasurface Holography With More-than-one Informationmentioning

confidence: 99%

Progresses in the practical metasurface for holography and lens

Sung

Lee

2019

Nanophotonics

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“…[135,136] The phase profile can be written as follows: ϕ = lθ, where l is the topological charge and θ is the azimuthal angle in the plane perpendicular to the propagation direction; l can be viewed as the number of twists within one wavelength and is related to the orbital angular momentum L by the equation L = lℏ, where ℏ is the reduced Planck constant. [45,[139][140][141][142] Lower panels: measured and calculated far-field intensity distributions of the vortex beam (left) and measured and calculated interference patterns created by the interference of an optical vortex and a copropagating Gaussian beam (middle) or a tilted Gaussian beam (right). [45,[139][140][141][142] Lower panels: measured and calculated far-field intensity distributions of the vortex beam (left) and measured and calculated interference patterns created by the interference of an optical vortex and a copropagating Gaussian beam (middle) or a tilted Gaussian beam (right).…”

Section: Optical Vortexmentioning

confidence: 99%

Phase Manipulation of Electromagnetic Waves with Metasurfaces and Its Applications in Nanophotonics

Chen

Zhang

et al. 2018

Advanced Optical Materials

126

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elements. Thus, realizing phase manipulation of EM waves at the nanoscale has become a key pursuit for the development of modern optics and nanophotonics.Metamaterials are 3D artificial nanostructures composed of periodic subwavelength unit cells that resonantly couple to the incident EM waves, exhibiting effective electric and magnetic responses not found in nature. [1][2][3] However, these promising potential applications are hindered in their applications due to the challenges of fabricating the required complex 3D nanostructures and the inherent metallic losses and strong dispersion of plasmonic elements at optical frequencies. Planar metamaterials, or so-called metasurfaces, can be fabricated using existing technologies, such as the lithography method and have attracted increasing attention due to their feasibility, low loss, and ease of fabrication. [4,5] The most prominent advantage of metasurfaces is that they can generate spatial phase discontinuities over the full 2π range with an optically thin interface; moreover, the resolution is less than one wavelength. Thus, wavefronts can be shaped with a distance of much less than the wavelength. With the increasing development of metasurfaces, the aforementioned limitations can be solved using various ultrathin optical devices, which have properties superior to their conventional counterparts. [6][7][8][9][10][11][12] Here, we concentrate on the new capabilities of metasurfaces in recent years in manipulating the phase and propagation behaviors of EM waves. In Section 2, we briefly introduce the underlying mechanisms of three types of phase discontinuities. In Section 3, we review the basic applications of phase modulation using metasurfaces. In Section 4, we review more complex and advanced information photonics that have emerged from metasurfaces. In the last section, we provide concluding remarks and an outlook on future development directions. Three Basic Types of Phase Discontinuities Generated by Metasurfaces Resonance PhaseThe pioneering approach to achieve phase discontinuities was to use the dispersion of various metallic nanoantennas, as shown in the left panel of Figure 1a. The optical energy is coupled to surface EM waves propagating back and forth along the antenna surface. Due to the localized surface plasmon resonance, these waves are accompanied by oscillating free electrons Relative to conventional phase-modulation optical elements, metasurfaces (i.e., 2D versions of metamaterials) have shown novel optical phenomena and promising functionalities with more compact platforms and more straightforward fabrication processes. With the ability to generate a spatial phase variation, optical wavefronts can be manipulated into arbitrary shapes at will, enabling new phenomena and integrated ultrathin optical devices to be explored. This review is focused on recent developments regarding phase manipulation of electromagnetic waves with metasurfaces. Starting from their underlying physics for realizing full 2π phase manipulation, an overview of the applica...

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“…Chiral metamaterials are an important subset of metamaterials and have an additional mirror symmetry breaking in the propagation direction or two-dimensional plane. They can arbitrarily modulate the polarization of EMWs at sub-wavelength scales due to the strong chiral response from the handedness-selective EM resonance in the structures, demonstrating many intriguing phenomena and applications, such as negative refractive index, 6,7 circular dichroism, [8][9][10] asymmetric transmission, [11][12][13][14][15] polarization rotation and conversion, [16][17][18][19][20][21] chiral-selective absorber, 22,23 and so forth. Recently, multifunctional metamaterials are highly desired to meet the increasing demand for miniaturization and complex application scenarios.…”

Section: Introductionmentioning

confidence: 99%

“…Although the integration of circular asymmetric transmission with wavefront manipulation can make chiral metamaterials more versatile, the involved polarization control only relates to the circular polarization conversion. 14,40 Recently, Yang et al design a direction-controlled bifunctional metasurface polarizer, but it suffers from a low transmission and narrow bandwidth due to the strong coupling. 41 Despite of the high importance in applications, it remains elusive to achieve a passive metamaterial for multifunctional polarization control with a high efficiency and broad bandwidth.…”

Section: Introductionmentioning

confidence: 99%

High-performance bifunctional polarization switch chiral metamaterials by inverse design method

et al. 2019

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Multifunctional polarization controlling plays an important role in modern photonics, but their designs toward broad bandwidths and high efficiencies are still rather challenging. Here, by applying the inverse design method of model-based theoretical paradigm, we design cascaded chiral metamaterials for different polarization controls in oppositely propagating directions and demonstrate their broadband and high-efficiency performance theoretically and experimentally. Started with the derivation of scattering matrix towards specified polarization control, a chiral metamaterial is designed as a meta-quarter-wave plate for the forward propagating linearly polarized wave, which converts the x-or y-polarized wave into a nearly perfect left-or right-handed circularly polarized wave; intriguingly, it also serves as a 45°polarization rotator for the backward propagating linearly polarized waves. This bifunctional metamaterial shows a high transmission as well as a broad bandwidth due to the Fabry-Perot-like interference effect. Using the similar approach, an abnormal broadband meta-quarter-wave plate is achieved to convert the forward x-and y-polarized or the backward y-and x-polarized waves into left-and right-handed circularly polarized waves with high transmission efficiencies. The integration of multiple functions in a single structure endows the cascaded chiral metamaterials with great interests for the high-efficiency polarization-controlled applications.npj Computational Materials (2019) 5:93; https://doi.

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All‐Dielectric Metasurfaces for Simultaneous Giant Circular Asymmetric Transmission and Wavefront Shaping Based on Asymmetric Photonic Spin–Orbit Interactions

Cited by 314 publications

References 42 publications

Progresses in the practical metasurface for holography and lens

Progresses in the practical metasurface for holography and lens

Phase Manipulation of Electromagnetic Waves with Metasurfaces and Its Applications in Nanophotonics

High-performance bifunctional polarization switch chiral metamaterials by inverse design method

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