Perfect narrow band absorber for sensing applications

Luo, Shiming; Zhao, Jun; Zuo, Duluo; Wang, Xinbing

doi:10.1364/oe.24.009288

Cited by 160 publications

(71 citation statements)

References 34 publications

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“…Using Au bowtie nanoantenna arrays with metal-insulator-metal configuration, Lin simulated numerically a sensor with the FOM of 254 [27]. With the efforts made by Luo, the relatively higher FOM of 1054 has been obtained via a metal-metal-dielectric-metal (MMDM) structure [28]. Lu proposed a metal nanobar array with nanoslits backed metal plate structure in theory, which has FOM reaching 25 [29].…”

Section: Introductionmentioning

confidence: 99%

Infrared Plasmonic Refractive Index Sensor with Ultra-High Figure of Merit Based on the Optimized All-Metal Grating

et al. 2017

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A perfect ultra-narrow band infrared metamaterial absorber based on the all-metal-grating structure is proposed. The absorber presents a perfect absorption efficiency of over 98% with an ultra-narrow bandwidth of 0.66 nm at normal incidence. This high efficient absorption is contributed to the surface plasmon resonance. Moreover, the surface plasmon resonance-induced strong surface electric field enhancement is favorable for application in biosensing system. When operated as a plasmonic refractive index sensor, the ultra-narrow band absorber has a wavelength sensitivity 2400 nm/RIU and an ultra-high figure of merit 3640, which are much better than those of most reported similar plasmonic sensors. Besides, we also comprehensively investigate the influences of structural parameters on the sensing properties. Due to the simplicity of its geometry structure and its easiness to be fabricated, the proposed high figure of merit and sensitivity sensor indicates a competitive candidate for applications in sensing or detecting fields.

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Section: Introductionmentioning

confidence: 99%

Infrared Plasmonic Refractive Index Sensor with Ultra-High Figure of Merit Based on the Optimized All-Metal Grating

et al. 2017

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“…The prospect of deep subwavelength light confinement is offered by plasmonics. The attributes of light harvesting and concentrating its energy into subwavelength volumes open a door for a variety of applications, including sensing and spectroscopy [1][2][3], single molecule detection [4,5], photo detection [6,7], and photovoltaics [8]. Generally, the main features for a perfect plasmonic absorber are the operation bandwidth, sensitivity to light polarization, omni-directionality, and for some applications the overall thickness of the design.…”

Section: Introductionmentioning

confidence: 99%

Visible light nearly perfect absorber: an optimum unit cell arrangement for near absolute polarization insensitivity

et al. 2017

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Abstract:In this work, we propose an optimum unit cell arrangement to obtain near absolute polarization insensitivity in a metal-insulator-metal (MIM) based ultra-broadband perfect absorber. Our findings prove that upon utilizing this optimum arrangement, the response of the absorber is retained and unchanged over all arbitrary incidence light polarizations, regardless of the shape of the top metal patch. First, the impact of the geometry of the top nanopatch resonators on the absorption bandwidth of the overall structure is explored. Then, the response of the MIM design for different incidence polarizations and angles is scrutinized. Finally, the proposed design is fabricated and characterized.

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“…Photonic nanostructures control light propagation through optical media. They can function as perfect absorbers [1], [2], efficient scatterers [3], [4], frequency selective surfaces [5]- [7], etc. Optical sensors based on surface plasmon resonances (SPR) benefit from the use of nanostructures for an increased range of applications with improved performance.…”

Section: Performance Improvement Of Refractometric Sensors Through Hymentioning

confidence: 99%

Performance Improvement of Refractometric Sensors Through Hybrid Plasmonic–Fano Resonances

Elshorbagy

Cuadrado

González

et al. 2019

J. Lightwave Technol.

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In this paper, we present a plasmonic refractometric sensor that works under normal incidence; allowing its integration on a fiber tip. The sensor's material and geometry exploit the large scattering cross-section given by high-contrast of the index of refraction subwavelength dielectric gratings. Our design generates a hybrid plasmonic-Fano resonance due to the interference between the surface plasmon resonance and the grating response. We optimize the sensor with a merit function that combines the quality parameter of the resonance and the field enhancement at the interaction volume where the plasmon propagates. Our device shows a high sensitivity (1000 nm/RIU) and a high Figure of Merit (775 RIU −1 ). Degradation in performance is negligible through a wide dynamic range up to 0.7 RIU. These quantitative parameters overperform compared to similar plasmonic sensors.

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Perfect narrow band absorber for sensing applications

Cited by 160 publications

References 34 publications

Infrared Plasmonic Refractive Index Sensor with Ultra-High Figure of Merit Based on the Optimized All-Metal Grating

Infrared Plasmonic Refractive Index Sensor with Ultra-High Figure of Merit Based on the Optimized All-Metal Grating

Visible light nearly perfect absorber: an optimum unit cell arrangement for near absolute polarization insensitivity

Performance Improvement of Refractometric Sensors Through Hybrid Plasmonic–Fano Resonances

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