Numerical investigation of metasurface narrowband perfect absorber and a plasmonic sensor for a near-infrared wavelength range

2021 ◽  
Author(s):  
Svetlana N. Khonina ◽  
Muhammad Ali Butt ◽  
N.L. Kazanskiy
Keyword(s):  
Numerical Investigation ◽  
Wavelength Range ◽  
Near Infrared ◽  
Perfect Absorber ◽  
Plasmonic Sensor ◽  
Infrared Wavelength

scholarly journals Multiple-Mode Bowtie Cavities for Refractive Index and Glucose Sensors Working in Visible and Near-Infrared Wavelength Range

2021 ◽  
Author(s):  
Yuan-Fong Chou Chau
Keyword(s):  
Refractive Index ◽  
Wavelength Range ◽  
Figure Of Merit ◽  
Near Infrared ◽  
Glucose Sensors ◽  
Plasmonic Sensor ◽  
Infrared Wavelength ◽  
Resonance Modes ◽  
Multiple Mode ◽  
Metal Insulator Metal

Abstract A multiple-mode metal-insulator-metal plasmonic sensor with four coupled bowtie resonators containing two pair of silver baffles is numerically investigated using the finite element method and verified by the temporal coupled-mode theory. The proposed structure can function as the plasmonic refractive index and glucose sensors working in visible and near-infrared wavelength range. Simulation results show that introducing the silver baffles in bowtie cavities can modify the plasmon resonance modes and give a tunable way to enhance the sensitivity and figure of merit. The highest sensitivity (S) can reach S=1500.00, 1400.00, and 1100.00 nm/RIU and the high figure of merit (FOM) of 50.00, 46.67, and 36.67 RIU-1 from mode 1 to mode 3. The sensitivity obtained from three modes with operating wavelengths in visible and near-infrared simultaneously exceeds 1100.00 nm/RIU along with remarkably high FOM, which are not attainable from other reported literature. The proposed structure can realize multi-mode and shows impressive practical prospects that can be applied for integrated optics circuits (IOCs) and other nanophotonics devices.

Hybridization-sensitive fluorescence control in the near-infrared wavelength range

2011 ◽  
Vol 9 (11) ◽  
pp. 4199 ◽  
Author(s):  
Shuji Ikeda ◽  
Hiroyuki Yanagisawa ◽  
Akiko Nakamura ◽  
Dan Ohtan Wang ◽  
Mizue Yuki ◽  
...  
Keyword(s):  
Wavelength Range ◽  
Near Infrared ◽  
Infrared Wavelength

scholarly journals Perfect Dual-Band Absorber Based on Plasmonic Effect with the Cross-Hair/Nanorod Combination

Nanomaterials ◽  
2020 ◽  
Vol 10 (3) ◽  
pp. 493 ◽  
Author(s):  
Yuan-Fong Chou Chau ◽  
Chung-Ting Chou Chao ◽  
Hung Ji Huang ◽  
Muhammad Raziq Rahimi Kooh ◽  
N. T. R. N. Kumara ◽  
...  
Keyword(s):  
Figure Of Merit ◽  
Near Infrared ◽  
High Sensitivity ◽  
Dual Band ◽  
Localized Surface Plasmon ◽  
Perfect Absorber ◽  
Plasmonic Effect ◽  
Plasmonic Sensor ◽  
Nanophotonic Devices ◽  
The Cross

Plasmonic effect using a cross-hair can convey strongly localized surface plasmon modes among the separated composite nanostructures. Compared to its counterpart without the cross-hair, this characteristic has the remarkable merit of enhancing absorptance at resonance and can make the structure carry out a dual-band plasmonic perfect absorber (PPA). In this paper, we propose and design a novel dual-band PPA with a gathering of four metal-shell nanorods using a cross-hair operating at visible and near-infrared regions. Two absorptance peaks at 1050 nm and 750 nm with maximal absorptance of 99.59% and 99.89% for modes 1 and 2, respectively, are detected. High sensitivity of 1200 nm refractive unit (1/RIU), figure of merit of 26.67 and Q factor of 23.33 are acquired, which are very remarkable compared with the other PPAs. In addition, the absorptance in mode 1 is about nine times compared to its counterpart without the cross-hair. The proposed structure gives a novel inspiration for the design of a tunable dual-band PPA, which can be exploited for plasmonic sensor and other nanophotonic devices.

The Copernicus atmospheric Mission Sentinel-4: Status of algorithm developments for the L1b and L2 processors

2020 ◽  
Author(s):  
Grégory Bazalgette Courrèges-Lacoste ◽  
Norrie Wright ◽  
Ben Veihelmann ◽  
Berit Ahlers ◽  
Olivier Le Rille ◽  
...  
Keyword(s):  
Air Quality ◽  
Wavelength Range ◽  
Near Infrared ◽  
Quality Parameters ◽  
Atmospheric Composition ◽  
Signal Loss ◽  
Infrared Wavelength ◽  
Ground Segment ◽  
Spectral Bands ◽  
The Status

<p>The Copernicus missions Sentinel-4 (S4) and Sentinel-5 (S5) will carry out atmospheric composition observations on an operational long-term basis to serve the needs of the Copernicus Atmosphere Monitoring Service (CAMS) and the Copernicus Climate Change Service (C3S).</p><p>Building on the heritage from instruments such as GOME, SCIAMACHY, GOME-2, and OMI, S4 is an imaging spectrometer instruments covering wide spectral bands in the ultraviolet and visible wavelength range (305-500nm) and near infrared wavelength range (750-775 nm). S4 will observe key air quality parameters with a pronounced temporal variability by measuring NO<sub>2</sub>, O<sub>3</sub>, SO<sub>2</sub>, HCHO, CHOCHO, and aerosols over Europe with an hourly revisit time.</p><p>A series of two S4 instruments will be embarked on the geostationary Meteosat Third Generation-Sounder (MTG-S) satellites. S4 establishes the European component of a constellation of geostationary instruments with a strong air quality focus, together with the NASA mission TEMPO and the Korean mission GEMS.</p><p>This paper will address the development status of the L1b Operational Processor (L1OPS) by EUMETSAT and the supporting L1b reference processor (L1RP) developed by ESA; In dedicated cases (e.g. CTI, Non-linearity signal loss, ...) the algorithms input from the S4 Industrial Prime have been used. The paper will also provide an overview of the status of the Level 2 processor developed by ESA for integration into the EUMETSAT MTG-S ground segment.</p>

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