Polarization selective beam shaping using nanoscale dielectric metasurfaces

Desiatov, Boris; Mazurski, Noa; Fainman, Yeshaiahu; Levy, Uriel

doi:10.1364/oe.23.022611

Cited by 85 publications

(65 citation statements)

References 35 publications

(37 reference statements)

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“…11 Flat-profile devices such as reflectarrays and transmitarrays present a compact alternative to such devices. 54 Although the latter options require greater complexity and are of lower bandwidth, reflectarrays 55,56 and transmitarrays 57 can exhibit birefringence for polarization-dependent multiplexing. This can be used to effectively double the capacity of a single beam, as distinct messages can be encoded into FIG. 1.…”

Section: Introductionmentioning

confidence: 99%

Tutorial: Terahertz beamforming, from concepts to realizations

et al. 2018

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The terahertz range possesses significant untapped potential for applications including high-volume wireless communications, noninvasive medical imaging, sensing, and safe security screening. However, due to the unique characteristics and constraints of terahertz waves, the vast majority of these applications are entirely dependent upon the availability of beam control techniques. Thus, the development of advanced terahertz-range beam control techniques yields a range of useful and unparalleled applications. This article provides an overview and tutorial on terahertz beam control. The underlying principles of wavefront engineering include array antenna theory and diffraction optics, which are drawn from the neighboring microwave and optical regimes, respectively. As both principles are applicable across the electromagnetic spectrum, they are reconciled in this overview. This provides a useful foundation for investigations into beam control in the terahertz range, which lies between microwaves and infrared light. Thereafter, noteworthy experimental demonstrations of beam control in the terahertz range are discussed, and these include geometric optics, phased array devices, leaky-wave antennas, reflectarrays, and transmitarrays. These techniques are compared and contrasted for their suitability in applications of terahertz waves.

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Section: Introductionmentioning

confidence: 99%

Tutorial: Terahertz beamforming, from concepts to realizations

et al. 2018

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“…Metamaterials composed of subwavelength structures allow for the use of efective medium approach to describe their electromagnetic waves response in phase and amplitude sensitive to both shape and orientation of the structures. With this character, holograms which manifest itself as reconstructing predesigned images have been advanced dramatically by using metamaterial devices [71][72][73][74][75][76][77]. These days, polarization-switchable holograms that can separate the readout electromagnetic waves by its polarization to reconstruct diferent holographic images, lead to various applications such as image processing and multilevel optical switching.…”

Section: Polarization-switchable Phase Holograms With Metamaterials Dementioning

confidence: 99%

“…Figure 10b shows the demonstration of arbitrary polarization selective beam shaping with a dielectric metamaterial device [76]. Taking advantage of the conjugate phase modulation obtained by illuminating the device with LCP and RCP, two independent images, for the two orthogonal polarization states has been demonstrated.…”

Section: Polarization-switchable Phase Holograms With Metamaterials Dementioning

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

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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.

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“…To address this issue, the use of dielectric metasurfaces should be considered, which is a recent topic [ 38 ] that has already led to many interesting developments in beam shaping in the near-infrared domain ( 1 5 λ ≈ μ 1.5 m) where silicon offers high transmission. [39][40][41][42] the dielectric analog of present metallic structures would also suffer from dispersion regarding the broadband optical vortex generation capabilities. Although the quantitative analysis of such an issue is beyond the scope of the present study, one can suppose that appropriate choice of materials and substructure design of the nanograting grooves could lead to interesting broadband properties.…”

Section: These Classes Of Curvesmentioning

confidence: 99%

Tailoring Orbital Angular Momentum of Light in the Visible Domain with Metallic Metasurfaces

Hakobyan

Magallanes

Seniutinas

et al. 2015

Advanced Optical Materials

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ways. One can mention the use of spiral phase plates, [ 3,4 ] computer generated holograms, [ 5,6 ] optical mode conversion, [ 7 ] lasing on higher-order modes of resonators, [ 8 ] light propagation in uniaxial crystals, [ 9,10 ] and space-variant birefringent retarders with formed [ 11 ] or natural [ 12 ] birefringence. Since then, these approaches have been improved and singular photonic technologies have emerged, a large set of products being now available to generate vortex beams. Still, from a practical point of view, mature options remain those relying on bulk and macroscopic optical elements.Quite naturally, research efforts have been made to miniaturize singular optical devices. For instance, femtosecond 3D direct laser writing technique has been proposed to fabricate microscopic spiral phase plates [ 13 ] and easy-prototyping of almost arbitrary singular microoptical elements with standard optical quality is now achievable. [ 14,15 ] On the other hand, self-engineered topological defects of liquid crystals have been shown to behave as small-scale optical vortex generators based on spinorbit interaction of light. In particular, the initial approach based on droplets (1−10 µm diameter) [ 16 ] evolved toward the use of thin (10−100 µm thick) fi lms whose effi ciency, diversity, tunability, and reconfi gurability stand with more than decent fi gures of merit. [17][18][19][20] Another approach consists to functionalize existing integrated optics subsystems with singular features, for instance, by twisting weakly deformed fi bers [ 21 ] or by using corrugated ring microresonators coupled to waveguides. [ 22 ] Of course, above few examples do not aim at providing an exhaustive list of recent progresses and, in order to partly fi ll this gap, one may refer to ref.[ 23 ] for a review of several strategies toward the elaboration of compact singular photonic devices. In particular, the use of ultrathin (i.e., with subwavelength thickness) artifi cially structured surfaces received a growing interest since a few years, as summarized in several recent reviews. [24][25][26][27] The common denominator of these approaches is subwavelength structuring of ultrathin material layer that confers "meta"-properties to it, from which originates the terminology of optical "meta"-surfaces.In this work, we address the particular case of optical vortex generation with topological charge up to | | 10 = , in the visible domain, by using nanostructured metallic thin fi lms following an approach introduced by Hasman's group in the early 2000s in the mid-infrared domain. [ 11 ] The idea consists to benefi t from the spinorbit interaction of light owing to azimuthally varying artifi cially birefringent waveplates made of inhomogeneous subwavelength Submicron-thick gold fi lms endowed with subwavelength patterning allow on-demand topological shaping of light, hence the precise delivery of optical orbital angular momentum. Several kinds of metallic metasurfaces enabling the generation of optical vortices with arbitrary topological charges...

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Polarization selective beam shaping using nanoscale dielectric metasurfaces

Cited by 85 publications

References 35 publications

Tutorial: Terahertz beamforming, from concepts to realizations

Tutorial: Terahertz beamforming, from concepts to realizations

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

Tailoring Orbital Angular Momentum of Light in the Visible Domain with Metallic Metasurfaces

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