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polarization-independent near-perfect absorber in the visible regime based on one-dimensional meta-surface
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نویسنده
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zhou yun ,luo minghui ,chen linsen
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منبع
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plasmonics - 2017 - دوره : 12 - شماره : 6 - صفحه:1889 -1895
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چکیده
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We present a polarization-independent near-perfect absorber in the visible regime based on one-dimensional meta-surface. in this absorber, the dielectric grating layer with high refractive index is essential, which supports strongly localized electromagnetic modes concentrated in the double-metal regions. the simulation results show that absorption peaks are over 99% at the wavelength of 0.45 μm for both tm and te polarizations. the near-perfect absorptions are attributed to the lateral plasmon cavity resonance and longitudinal fabry-perot-like cavity resonance for tm and te polarization, respectively. furthermore, theses absorption peaks can maintain almost unchanged within wide ranges of incident and azimuthal angles. comparing with those meta-material absorbers with complex two-dimensional array and one-dimensional stacked array, this one-dimensional absorber has a very simple geometrical structure which can be integrated into complex photonic devices expediently.
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کلیدواژه
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absorption ,resonance ,surface plasmons ,cavity mode
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آدرس
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soochow university, college of physics, optoelectronics and energy and collaborative innovation center of suzhou nano science and technology, china. key lab of advanced optical manufacturing technologies of jiangsu province and key lab of modern optical technologies of education ministry of china, soochow university, china, soochow university, college of physics, optoelectronics and energy and collaborative innovation center of suzhou nano science and technology, china. key lab of advanced optical manufacturing technologies of jiangsu province and key lab of modern optical technologies of education ministry of china, soochow university, china, soochow university, college of physics, optoelectronics and energy and collaborative innovation center of suzhou nano science and technology, china. key lab of advanced optical manufacturing technologies of jiangsu province and key lab of modern optical technologies of education ministry of china, soochow university, china
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Authors
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