Controllable optical activity with non-chiral plasmonic metasurfaces

Yu, Ping; Li, Jianxiong; Tang, Chengchun; Cheng, Hua; Liu, Zhaocheng; Li, Zhancheng; Liu, Zhe; Gu, Changzhi; Li, Junjie; Chen, Shuqi; Tian, Jianguo

doi:10.1038/lsa.2016.96

Cited by 76 publications

(52 citation statements)

References 47 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…One method to solve these problems is to use spatially inhomogeneous arrays of anisotropic optical antennas. [132] Copyright 2016, Nature Publishing Group. [127] Two subunits (pink and green), each of which contains eight gold V-shaped antennas, make up a unit cell.…”

Section: Polarization Manipulator Based On Phase Modulationmentioning

confidence: 99%

“…The angular bisector of the nanoantenna pairs (the optical axis of the half-wave plate) remains constant during the rotation. [132] The unit cell contains two different cross-shaped nanoaperture subunits that can convert the linearly polarized light into RCP or LCP light at a subwavelength scale. By modulating the phase differences between two or more subunits, an optical activity can also be realized using nonchiral metasurfaces.…”

Section: Polarization Manipulator Based On Phase Modulationmentioning

confidence: 99%

See 1 more Smart Citation

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

Chen

Zhang

et al. 2018

Advanced Optical Materials

Self Cite

120

View full text Add to dashboard Cite

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...

show abstract

Section: Polarization Manipulator Based On Phase Modulationmentioning

confidence: 99%

Section: Polarization Manipulator Based On Phase Modulationmentioning

confidence: 99%

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

Chen

Zhang

et al. 2018

Advanced Optical Materials

Self Cite

120

View full text Add to dashboard Cite

show abstract

“…This kind of designs simultaneously manipulate the amplitude and phase of electric-magnetic components [35], [38]- [41], resulting in much higher degree of freedom for polarization conversion. In Figure 3(c), the incident linearly polarized (LP) wave can be converted into left-circularly polarized (LCP) and right-circularly polarized (RCP) beams at sub-wavelength scale [38]. The diference of phase retardation between the LCP and RCP beams can be easily modiied by varying the geometrical parameters of the nano-apertures, leading to continuously controllable optical activity.…”

Section: Conversion Of Polarization and Generation Of Vector Beamsmentioning

confidence: 99%

Polarization State Manipulation of Electromagnetic Waves with Metamaterials and Its Applications in Nanophotonics

Chen¹,

Liu²,

Li³

et al. 2017

Metamaterials - Devices and Applications

Self Cite

View full text Add to dashboard Cite

Polarization state is an important characteristic of electromagnetic waves. The arbitrary control of the polarization state of such wave has atracted great interest in the scientiic community because of the wide range of modern optical applications that such control can aford. Recent advances in metamaterials provide an alternative method of realizing arbitrary manipulation of polarization state of electromagnetic waves in nanoscale via ultrathin, miniaturized, and easily integrable designs. In this chapter, we give a review of recent developments on polarization state manipulation of electromagnetic waves in metamaterials and discuss their applications in nanophotonics, such as polarization converter, wavefront controller, information coding, and so on.

show abstract

“…[1,2] A number of fascinating phenomena and applications that challenge our understanding of the electromagnetic response of materials, including negative refraction indices, [3] invisibility cloaking, [4][5][6] controllable optical activity, [7] and flat lenses that focus light beyond the diffraction limit [8] have been demonstrated by engineering the geometry of nanostructured metasurfaces. [1,2] A number of fascinating phenomena and applications that challenge our understanding of the electromagnetic response of materials, including negative refraction indices, [3] invisibility cloaking, [4][5][6] controllable optical activity, [7] and flat lenses that focus light beyond the diffraction limit [8] have been demonstrated by engineering the geometry of nanostructured metasurfaces.…”

mentioning

confidence: 99%

Bidirectional Perfect Absorber Using Free Substrate Plasmonic Metasurfaces

Tang

et al. 2017

Advanced Optical Materials

Self Cite

View full text Add to dashboard Cite

the significance of metasurfaces. [9] Metasurface absorbers have attracted considerable interest and motivated a number of theoretical and experimental studies over the past few years. Many efforts have been made to achieve metasurface absorbers with polarization-insensitive, [10] wideangle, [11] multiband, [12,13] or broadband performance [14] from gigahertz to terahertz to optical ranges, which could have many different potential applications. However, the traditional metasurface absorbers exist theoretical limit. The basic idea of the traditional metasurface absorbers is to simultaneously minimize the reflectance through the interference of multiple reflections, eliminate the transmittance through introducing metallic ground on the bottom of metasurface, and maximize the structure losses. [15] Their electric and magnetic response can be properly tuned by tailoring the structure. Based on this theory, the reported metasurface absorbers have a lot of limitations in the structural designs, which are often made up of a dielectric spacer sandwiched between resonators and metallic ground plane. [10][11][12][13][14][15][16] Therefore, there are well-known challenges in optimizing the performance of metasurface absorbers, and it is urgent to tackle the barriers posed by the theoretical limit and improve the optical properties of metasurface absorbers to satisfy the requirements for practical applications.Recently, new degrees of freedom were attained by introducing abrupt phase changes via plasmonic metasurfaces. [17,18] Such metasurfaces are capable of generating a wide range of position-dependent discontinuous interfacial phase profiles. Since an abrupt phase shift over the wavelength scale can be introduced, the relationship between the incident and refracted beams seems to go beyond the standard Snell's law. [17] By simply engineering the metasurface-induced phase profile, a nearly arbitrary wavefront can be achieved. [19][20][21][22] This unique approach, viz. introducing an abrupt phase change using a flat metasurface, promises interesting device applications beyond the scope of conventional components that rely on gradual phase accumulation to shape the wavefront. It has already been used to demonstrate some exotic phenomena, including anomalous reflection and refraction, [17] the spin Hall effect of light, [23] plasmonic metalens, [24] metasurface holograms, [25] optical polarization conversion of light, [26] and so on. Therefore, controlling the wavefront by using metasurfaces

show abstract

Controllable optical activity with non-chiral plasmonic metasurfaces

Cited by 76 publications

References 47 publications

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

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

Polarization State Manipulation of Electromagnetic Waves with Metamaterials and Its Applications in Nanophotonics

Bidirectional Perfect Absorber Using Free Substrate Plasmonic Metasurfaces

Contact Info

Product

Resources

About