Convertible Perfect Absorber with Single Ring Resonator: Tunable Single Band/Dual-Band Visible
Publish place: Journal of Modeling & Simulation in Electrical & Electronics Engineering، Vol: 1، Issue: 4
Publish Year: 1401
نوع سند: مقاله ژورنالی
زبان: English
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شناسه ملی سند علمی:
JR_MSEEE-1-4_002
تاریخ نمایه سازی: 2 مهر 1403
Abstract:
This study proposes a single and dual-band tunable and convertible perfect absorber in the infrared band, consisting of a dielectric layer and a metallic bottom film. Primarily a tunable single-frequency absorber in the infrared region had been introduced. Subsequently, with the change in geometric structure, the proposed structure can be converted from infrared single-band to visible double-band frequency. The numerical simulation results indicate that the absorption spectrum of the single-band resonator is tuned from ۳۳۷.۴ THz to ۲۱۰.۲ THz, ۲۲۷.۳ THz, and ۲۹۷.۷ THz by changing effective parameters: ring width, ring height, and dielectric height. Next, by the parametric study of the proposed absorber dimensions, the absorption rate is obtained ۹۹% more at the designed frequencies; lastly, the dual-band absorption with an average performance of ۹۹.۹۸% in the visible spectrum. The proposed plasmonic absorber in this research has a variety of applications, including sensing, imaging, wavelength-selective thermal emission, photodetectors, and so on.
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Authors
Pouria Zamzam
Electrical and Computer Engineering Faculty, Semnan University, Semnan, Iran
Pejman Rezaei
Electrical and Computer Engineering Faculty, Semnan University, Semnan, Iran
Seyed Amin Khatami
Electrical and Computer Engineering Faculty, Semnan University, Semnan, Iran
Zahra Mousavirazi
۱۶۰۴, ۵۷۲۰ cavendish Cote Saint Luc
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