Browsing by Author "Khalily, Mohsen"

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    A polarization-dependent reflective color filter with grating-based Sb2S3 phase-change material
    (Institute of Electrical and Electronics Engineers, 2024-09-30) Omam, Zahra Rahimian; Khalichi, Bahram; Osgouei, Ataollah Kalantari; Ghobadi, Amir; Khalily, Mohsen; Özbay, Ekmel
    This paper presents a reflective tunable color filter based on employing an antimony trisulfide (Sb2S3) grating structure. The design generates two different colors when illuminated by either one of two orthogonally polarized incident lights. Moreover, by adjusting the phase of the material, the resonances can be tuned, enabling the generation of different colors. This design offers a simple platform capable of generating four distinct colors across the visible spectrum.
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    ItemOpen Access
    Active control of Fano resonance with phase-change-based metasurface
    (Institute of Electrical and Electronics Engineers, 2024-09-30) Omam, Zahra Rahimian; Khalichi, Bahram; Osgouei, Ataollah Kalantari; Ghobadi, Amir; Khalily, Mohsen; Özbay, Ekmel
    This paper presents a phase-change-based metasurface absorber that can control the excitation of Fano resonance with temperature variations. The proposed thermally tunable metasurface-based configuration is designed based on strong coupling between the narrowband (discrete state) and broadband (continuum state) absorbers, leading to an excitation of Fano resonance within the infrared region.
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    Lithography-free tunable Fano resonator
    (Institute of Electrical and Electronics Engineers, 2024-09-30) Omam, Zahra Rahimian; Khalichi, Bahram; Osgouei, Ataollah Kalantari; Ghobadi, Amir; Khalily, Mohsen; Özbay, Ekmel
    This paper presents a lithography-free thermally tunable Fano resonator obtained by strong coupling between the narrowband and broadband resonators. The unique optical phonon response of the Dolomite (DLM) thin film and the phase-change material (PCM) of vanadium dioxide (VO2) are utilized to design such a Fano resonator. The findings of this study can have multiple applications, ranging from biosensing and gas-sensing to the modulation of thermal emission.