Search query: metasurface guide mode resonance

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abstract: A guide mode resonance based Indium Tin Oxide electrical tunable metasurface is proposed. By forming two metal oxide semiconductor capacitors in a single period, resonance wavelength can be tuned larger than 20nm in near IR spectral range.
author_names: Xiaoming Qiu

Fan Yang

Yanping Li

Fan Zhang
title: All Dielectric Tunable Metasurface Based on Guide Mode Resonance and ENZ Effects
venue: 2020 Conference on Lasers and Electro Optics (CLEO)
year: 2020

abstract: A novel integration strategy of microstrip antenna and metasurface is proposed to achieve low radar cross section (RCS) and improved radiation performance simultaneously. Aimed at the applications in stealth cylindrical carrier, the antenna has a circular configuration, and the metasurface cells are closely arranged around the radiation patch in a concentric ring type manner. Moreover, the mode analysis method is fully used to analyze the antenna's working mechanism and guide the optimization process. Owing to the addition of metallic vias, the original quasi TM30 mode is altered to three series TM10 modes and thus enhanced gain is achieved. Interestingly, the addition of vias also generates a new resonance which widen the antenna's impedance bandwidth. In another aspect, both in band and out of band RCS reductions are obtained simultaneously. Finally, two prototypes are fabricated to validate the proposed design strategy. Good agreements between measurements and simulations are obtained. Measured results show that the gain of the proposed antenna is at least 3 dB higher than the conventional antenna in the entire operating band, and obvious RCS reduction is achieved from 4.0 to 8.5 GHz concurrently.
author_names: Tong Li

Qi Li

Liaori Jidi

Jun Gao
title: Broadband Low RCS and High Gain Microstrip Antenna Based on Concentric Ring Type Metasurface
venue: IEEE Transactions on Antennas and Propagation
year: 2021

abstract: We perform a comprehensive analysis of multiband absorption properties in a metal dielectric metal dielectric (MDMD) nanostructure under TM wave illumination. The multiband absorption can be attributed to the hybridization of the surface plasmon resonance (SPR) and the guide mode resonance (GMR) and we identify the hybrid GMR/SPR by the dispersion relation equations of the SPR and GMR, respectively. More importantly, the MDMD nanostructure is very sensitive to the change of the dielectric environment for the special hybrid structure; thus, it can function as a good candidate for ultrasensitive biochemical sensing. The highest sensitivity of the MDMD nanostructure reaches 1087 nm/RIU with the figure of merit (FoM) of 23 and the new figure of merit (FoM* of 483; it is performed by the absorption peak at 1796.1 nm of the double surface plasmon polariton with the strongest field enhancement at the surface.
author_names: La Wang

Tian Sang

Jian Min Gao

Xin Yin

Honglong Qi
title: High performance sensor achieved by hybrid guide mode resonance/surface plasmon resonance platform.
venue: Applied optics
year: 2018

abstract: Abstract We report an ultra narrowband absorber with a dielectric dielectric metal (DDM) tri layer structure which is composed of a dielectric grating as the top layer, a dielectric spacer and a metal substrate. The simulation results show that, we can get an ultra narrowband absorber with the absorption bandwidth less than 0.05 nm and the absorption rate more than 0.99 within an ultra narrow angle for TE polarization (electric field is parallel to grating grooves) The results also show that the ultra narrowband absorption for TE polarization is originated from guide mode resonance and low power loss in the metal substrate. This ultra narrowband absorber is a good candidate for application in coherent emission of light by thermal source.
author_names: Yanlin Liao

Yan Zhao
title: An ultra narrowband absorber with a dielectric dielectric metal structure based on guide mode resonance
year: 2017

abstract: Colorimetric detection of target molecules with insensitivity to incident light polarization has attracted considerable attention in recent years. This resulted from the ability to provide rapid output and reduced assay times as a result of color changes upon altering the environment that are easily distinguishable by the naked eye. In this paper, we propose a highly sensitive refractive index sensor, utilizing the excitation of guided modes of a novel two dimensional periodically modulated dielectric grating waveguide structure. The optimized nanosensor can numerically excite guided mode resonances with an ultranarrow linewidth (full width at half maximum) of 0.58 nm. Sensitivity is numerically investigated by considering the deposition of dielectric layers on the structure. For a layer thickness of 30 nm, the maximum sensitivity reached as high as 110 nm/refractive index unit (RIU) resulting in a very high figure of merit of 190. The fabricated devices with 30 nm aluminum oxide and zinc oxide coatings
author_names: Deniz Umut Yildirim

Amir Ghobadi

Mahmut Can Soydan

Murat Gokbayrak

A Emre Toprak

Bayram Butun

Ekmel Ozbay
title: Colorimetric and Near Absolute Polarization Insensitive Refractive Index Sensing in All Dielectric Guided Mode Resonance Based Metasurface
venue: The Journal of Physical Chemistry C
year: 2019

abstract: A wideband multi mode low profile cavity backed metasurface antenna is proposed. The metasurface is composed of mushroom cells which support the propagation of both surface wave and composite right/left handed (CRLH) guided wave. By combining multi mode resonances of the cavity backed metasurface, including the first negative resonance on the left handed dispersion branch, zeroth order resonance, the first positive resonance on the right handed dispersion branch, and the transverse electric (TE) surface wave resonance, the proposed antenna achieves a bandwidth of 44.7% from 4.67 GHz to 7.36 GHz for reflection coefficient less than 10 dB and boresight radiation with realized gain ranging from 6.7 dBi to 9.9 dBi. The cavity backed metasurface has a low profile of 3.25 mm, or 0.05$\lambda$ at the lowest operating frequency.
author_names: E I Wei Liu

Zhi Ning Chen

Xianming Qing
title: Wideband Cavity Backed Metasurface Antenna Under Multi Mode Resonance
venue: 2018 International Symposium on Antennas and Propagation (ISAP)
year: 2018

abstract: We investigate Fano resonances and sensing enhancements in a simple Au/TiO2 hybrid metasurface through the finite different time domain (FDTD) simulation and coupled mode theory (CMT) analysis. The results show that the Fano resonance in the proposed simple metasurface is caused by the destructive interaction between the surface plasmon polaritons (SPPs) and the local surface plasmon resonances (LSPRs) the quality factor and dephasing time for the Fano resonance can be effectively tuned by the thickness of Au and TiO2 structures, the length of each unit in x and y directions, as well as the structural defect. In particular, single Fano resonance splits into multiple Fano resonances caused by a stub shaped defect, and multiple Fano resonances can be tuned by the size and position of the stub shaped defect. Moreover, we also find that the sensitivity in the Au/TiO2 hybrid metasurface with the stub shaped defect can reach up to 330 nm/RIU and 535 nm/RIU at the Fano resonance 1 and Fano resonance 2, which is more than three times as sensitive in the Au/TiO2 hybrid metasurface without the stub shaped defect, and also higher than that in the TiO2 metasurface reported before. These results may provide further understanding of Fano resonances and guidance for designing ultra high sensitive refractive index sensors.
author_names: Zhihui He

Weiwei Xue

Wei-wei Cui

Chunjiang Li

Zhenxiong Li

Lihui Pu

Jiaojiao Feng

Xintao Xiao

Xuyang Wang

Guangyi Li
title: Tunable Fano Resonance and Enhanced Sensing in a Simple Au/TiO2 Hybrid Metasurface
venue: Nanomaterials
year: 2020

abstract: We present the study based on rigorous coupled wave analysis and the S matrix method to evaluate guide mode resonance characteristics in the visible range of periodic subwavelength structure fabricated by holographic lithography. This structure consists of a single one dimensional grating dry etched in a diamond like carbon film on fused silica substrate. It is shown that reflection spectra of such structure have single peak at normal incidence and two peaks at oblique incidence. Peak positions strongly depend on the grating period and thickness of the waveguide layer. Moreover, the simulation results show that the shift of the second peak in the spectral reflectance is less sensitive to the change of certain structural parameters and is more sensitive to the change of the refractive index of the surrounding medium. It is shown that the simulation results can be employed for the interpretation of optical response obtained from guide mode resonance optical sensors.
author_names: Iryna Yaremchuk

Tomas Tamulevicius

Volodymyr Fitio

I Grazuleviciute

Yaroslav Bobitski

Sigitas Tamulevicius
title: Guide mode resonance characteristics of periodic structure on base of diamond like carbon film
year: 2013

abstract: We experimentally and numerically investigate the multiple types of resonance modes that occur in a metal dielectric metal (MDM) fishnet metasurface, including magnetic plasmon polaritons, localized surface plasmon resonance, and surface plasmon polariton Bloch waves in the visible spectral range. The parametric dependences of the multiple resonant wavelengths are all carefully analyzed by varying the gap layer thickness, the period and the neck length of the fishnet structure. Using our knowledge of the geometric parameter dependences, we demonstrate the feasibility of shaping the transmission spectrum of the MDM fishnet metasurface based on control of the light polarization. Numerical simulations are performed and their results coincide perfectly with the experimental results, which indicate that the magnetic mode is more easily tunable than the other modes. Our research will be useful in the design of MDM fishnet structures for specific applications at visible frequencies, including color filters, sensors, color light emitting devices, and laser sources.
author_names: Yuan Ren

Yonghua Lu

Tianyang Zang

Yong Wang

Yanqiu Dai

Pei Wang
title: Multi mode resonance properties of two dimensional metal dielectric metal fishnet metasurface at visible wavelengths
year: 2017

abstract: A two layer guide mode resonance structure made of shallow gratings deposited on the Kerr active guiding layer is used to realize high quality Fano resonance and step like transmission. The step like transmission is designed to work between the perfect transmission peak and the dip of the asymmetrical Fano spectrum. It is demonstrated that the steep transition in the transmission should be attributed to the strong field localization in cases of both high and low transmission states.
author_names: Xiubao Kang

Hai-Dong Li

Jun Ding

Zhi-guo Wang
title: Fano resonance and step like transmission via guide mode resonance structure.
venue: Optics letters
year: 2013