Design of the ultra-thin perfect metamaterial absorber with high Q-factor

In this paper, an ultrathin and polarization-insensitive THz perfect metamaterial absorber (PMA) was proposed using the traditional sandwiched structure with circular patch resonators on the top layer. The simulated spectrum shows that the proposed PMA has three distinctive absorption peaks at f1 = 0.8 THz, f2 = 2.28 THz and f3 = 3.62 THz, with absorbance of 96.7%, 97.9% and 99.8%, respectively. The electric field distributions of the PMA reveal that the absorption mainly originates from the standing wave resonances between the top and bottom layers. The proposed PMA is polarization insensitive due to its axisymmetric unit cell structure. By adjusting the structure parameters, the resonance frequency, intensity and Q-factor of absorption peak can be tuned effectively. Our design may find potential applications in THz imaging, sensing and signal detection.

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Very High Q-Factor Based On G-Shaped Resonator Type Metamaterial Absorber

Ibn AL- Haitham Journal For Pure and Applied Science ◽

10.30526/2017.ihsciconf.1788 ◽

2018 ◽

pp. 160 ◽

Cited By ~ 2

Author(s):

Khalid Saeed Lateef Al-Badri

Keyword(s):

Resonance Frequency ◽

Metamaterial Absorber ◽

Q Factor ◽

High Q ◽

Image Sensing ◽

At Resonance ◽

Band Filter ◽

Simulation Results ◽

Very High ◽

Triple Band

High Q-factor based on absorption can be achieved by tuning (the reflection and the transition percentage). In this work, the simple design and simulated in S-band have been investigated. The simulation results of G-shape resonator are shown triple band of absorption peaks 60%, 91.5%, and 70.3%) at resonance frequency 2.7 GHz, 3.26 GHz, and 4.05 GHz respectively. The results exhibited very high of the Q-factor ( 271 ) at resonance frequency ( 3.26 GHz ). The high Q-factor can be used to enhance the sensor sensing, narrowband band filter and image sensing.

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High-Q-Factor Tunable Silica-Based Microring Resonators

Photonics ◽

10.3390/photonics8070256 ◽

2021 ◽

Vol 8 (7) ◽

pp. 256

Author(s):

Yue-Xin Yin ◽

Xiao-Pei Zhang ◽

Xiao-Jie Yin ◽

Yue Li ◽

Xin-Ru Xu ◽

...

Keyword(s):

Optical Communications ◽

Microring Resonator ◽

Microring Resonators ◽

Q Factor ◽

Notch Depth ◽

Critical Coupling ◽

Practical Application ◽

Coupling Condition ◽

High Q ◽

Racetrack Resonator

A high-Q-factor tunable silica-based microring resonator (MRR) is demonstrated. To meet the critical-coupling condition, a Mach–Zehnder interferometer (MZI) as the tunable coupler was integrated with a racetrack resonator. Then, 40 mW electronic power was applied on the microheater on the arm of MZI, and a maximal notch depth of about 13.84 dB and a loaded Q factor of 4.47 × 106 were obtained. The proposed MRR shows great potential in practical application for optical communications and integrated optics.

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Theoretical design of a triple-band perfect metamaterial absorber based on graphene with wide-angle insensitivity

Results in Physics ◽

10.1016/j.rinp.2021.104037 ◽

2021 ◽

Vol 23 ◽

pp. 104037

Author(s):

Miao Pan ◽

Huazhu Huang ◽

Baodian Fan ◽

Wenzhi Chen ◽

Shuai Li ◽

...

Keyword(s):

Metamaterial Absorber ◽

Wide Angle ◽

Theoretical Design ◽

Perfect Metamaterial Absorber ◽

Triple Band

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Dual functionality metamaterial enables ultra-compact, highly sensitive uncooled infrared sensor

Nanophotonics ◽

10.1515/nanoph-2020-0607 ◽

2021 ◽

Vol 10 (4) ◽

pp. 1337-1346

Author(s):

Jin Tao ◽

Zhongzhu Liang ◽

Guang Zeng ◽

Dejia Meng ◽

David R. Smith ◽

...

Keyword(s):

High Sensitivity ◽

Metamaterial Absorber ◽

Bulk Acoustic Wave ◽

Infrared Sensors ◽

Bulk Acoustic Wave Resonator ◽

Wave Resonator ◽

Highly Sensitive ◽

Film Bulk ◽

Perfect Metamaterial Absorber ◽

High Absorption

Abstract Cointegration and coupling a perfect metamaterial absorber (PMA) together with a film bulk acoustic wave resonator (FBAR) in a monolithic fashion is introduced for the purpose of producing ultracompact uncooled infrared sensors of high sensitivity. An optimized ultrathin multilayer stack was implemented to realize the proposed device. It is experimentally demonstrated that the resonance frequency of the FBAR can be used efficiently as a sensor output as it downshifts linearly with the intensity of the incident infrared irradiation. The resulting sensor also achieves a high absorption of 88% for an infrared spectrum centered at a wavelength of 8.2 μm. The structure is compact and can be easily integrated on a CMOS-compatible chip since both the FBAR and PMA utilize and share the same stack of metal and dielectric layers.

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Tunable quad-band perfect metamaterial absorber on the basis of monolayer graphene pattern and its sensing application

Results in Physics ◽

10.1016/j.rinp.2021.104447 ◽

2021 ◽

pp. 104447

Author(s):

Jinping Tian ◽

Rujiao Ke ◽

Rongcao Yang ◽

Weihua Pei

Keyword(s):

Metamaterial Absorber ◽

Monolayer Graphene ◽

Perfect Metamaterial Absorber ◽

Sensing Application

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Dielectric-loaded L-band filters for high-power space applications

International Journal of Microwave and Wireless Technologies ◽

10.1017/s1759078721000982 ◽

2021 ◽

pp. 1-11

Author(s):

Paolo Vallerotonda ◽

Fabrizio Cacciamani ◽

Luca Pelliccia ◽

Alessandro Cazzorla ◽

Davide Tiradossi ◽

...

Keyword(s):

High Power ◽

Dielectric Resonators ◽

Q Factor ◽

Rf Power ◽

Space Applications ◽

High Q ◽

Critical Issues ◽

L Band ◽

Multipactor Discharge ◽

Filter Response

Abstract The design and first experimental results of Tx and Rx L-band bandpass filters for a high-power satellite diplexer are presented in this paper. Designed in the framework of an ESA ARTES AT project, the filters are based on TM010 mode dielectric resonators. These resonators allow for better results in terms of volume occupation with respect to other dielectric resonators still maintaining high Q-factor values (>2000). Volume saving above 30% is achieved with respect to standard coaxial filters. The filter geometries and materials have been chosen in order to improve the power-handling and to cope with related critical issues for space applications (i.e. avoid any multipactor discharge in the operating RF power range and low-PIM response). Measurements of Tx filter show good correlation with the design in terms of central frequency, BW, and unloaded Q-factor (almost 3000). Measurements of Rx filter show a worse correlation with the design in terms of filter response shape. This is ascribed to size tolerances of one of the filter resonators. Multiple analyses are ongoing to remove this degradation in the final engineering model.

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