Novel optical polarizer design based on metasurface nano aperture for biological sensing in mid-infrared regime

Heydari, Samaneh; Bazgir, Maryam; Zarrabi, Ferdows B.; Gandji, Navid P.; Rastan, Iman

doi:10.1007/s11082-017-0924-8

Cited by 13 publications

(2 citation statements)

References 28 publications

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“…All-dielectric metasurfaces have recently emerged as a valid and promising alternative to their plasmonic counterparts. Their lower dissipative losses and thermal heating at optical frequencies allow working at higher pump power for nonlinear frequency generation and the performance of non-invasive sensing of biological samples [1][2][3][4][5][6][7][8][9][10][11][12]. Moreover, in alldielectric resonators, electric and magnetic resonances can be used to engineer near and far fields, thus providing more degrees of freedom in the design of optical devices [1,[13][14][15][16].…”

Section: Introductionmentioning

confidence: 99%

Finite-Size and Illumination Conditions Effects in All-Dielectric Metasurfaces

et al. 2022

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Dielectric metasurfaces have emerged as a promising alternative to their plasmonic counterparts due to lower ohmic losses, which hinder sensing applications and nonlinear frequency conversion, and their larger flexibility to shape the emission pattern in the visible regime. To date, the computational cost of full-wave numerical simulations has forced the exploitation of the Floquet theorem, which implies infinitely periodic structures, in designing such devices. In this work, we show the potential pitfalls of this approach when considering finite-size metasurfaces and beam-like illumination conditions, in contrast to the typical infinite plane-wave illumination compatible with the Floquet theorem.

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Section: Introductionmentioning

confidence: 99%

Finite-Size and Illumination Conditions Effects in All-Dielectric Metasurfaces

et al. 2022

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“…The manipulation of the polarization of electromagnetic wave in the microwave-to-optical frequency range, has received a great attention, from researchers around the globe due to its diverse applications 1 , 2 . Applications of polarization manipulative metsurfaces includes, optical vertex converters 2 , optical metrology 3 , quarter 4 and half-wave plates 5 , polarimetry 6 , planar lenses 7 , GPR detection 8 , multi spectral photography 9 , biological sensing 10 and antennas 11 . Polarization can be manipulated either through conventional methods of using natural materials 12 or through artificially engineered materials.…”

Section: Introductionmentioning

confidence: 99%

Design and experimental analysis of dual-band polarization converting metasurface for microwave applications

Khan¹,

Kamal

Ullah³

et al. 2020

Sci Rep

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The manipulation of polarization state of electromagnetic waves is of great importance in many practical applications. In this paper, the reflection characteristics of a thin and dual-band metasurface are examined in the microwave frequency regime. The metasurface consists of a 22 × 22 element array of periodic unit cells. The geometry of the unit cell consists of three layers, including a 45° inclined dipole shape metal patch on top, which is backed by a 1.6 mm thick FR-4 substrate in the middle, and a fully reflective metallic mirror at the bottom. The proposed surface is exposed to horizontally (x) or vertically (y) polarized plane waves and the co and cross polarization reflection coefficients of the reflected waves are investigated experimentally in the 6–26 GHz frequency range. The metasurface is designed to convert incident waves of known polarization state (horizontal or vertical) to orthogonal polarization state (vertical and horizontal) in two distinct frequency bands, i.e. 7.1–8 GHz and 13.3–25.8 GHz. In these two frequency bands the simulated and experimental results are in good agreement. The polarization conversion ratio (PCR) of the surface is greater than 95% in the targeted frequency bands. A detailed parametric analysis of the metasurface is also discussed in this work and it has been estimated that the surface has the additional ability to convert linearly polarized waves to circularly polarized waves at several distinct frequencies. The proposed metasurface can be utilized in sensor applications, stealth technology, electromagnetic measurements, and antennas design.

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Antenna gain enhancement by using metamaterial radome at THz band with reconfigurable characteristics based on graphene load

Seyedsharbaty

Sadeghzadeh

2017

Opt Quant Electron

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Novel optical polarizer design based on metasurface nano aperture for biological sensing in mid-infrared regime

Cited by 13 publications

References 28 publications

Finite-Size and Illumination Conditions Effects in All-Dielectric Metasurfaces

Finite-Size and Illumination Conditions Effects in All-Dielectric Metasurfaces

Design and experimental analysis of dual-band polarization converting metasurface for microwave applications

Antenna gain enhancement by using metamaterial radome at THz band with reconfigurable characteristics based on graphene load

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