Browsing by Subject "Polarization insensitive"

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    A wavelength-selective multilayer absorber for heat signature control
    (Institute of Electrical and Electronics Engineers, 2022-09-28) Osgouei, Ataollah Kalantari; Khalichi, Bahram; Omam, Zahra Rahimian; Ghobadi, Amir; Özbay, Ekmel
    Engineering the thermal radiation using wavelength-selective thermal emitters is of great importance in the field of thermophotovoltaics, radiative cooling, and heat signature control. In this paper, a wavelength-selective Vanadium/Germanium (V/Ge) multilayer absorber is demonstrated. The proposed design realizes a perfect absorption at the resonance wavelength of 5870 nm, placed within the nonatmospheric window (5-8 μ m) while maintaining low absorptivity within the atmospheric windows. It is verified that the proposed emitter represents angle insensitive feature for oblique incidence up to 60° for both transverse magnetic (TM) and transverse electric (TE) polarizations.