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Recently, considerable studies have shown that plasmon induced transparency (PIT) effect can be realized by metamaterials via destructive interference between different resonance modes. Here we present a few recent developments of PIT research in terahertz metamaterials.
A graded grating is used to localize frequency components of a broadband THz source. We show spatial localization of the field within the grating. Further, various nano-antennas placed within the structure are amenable to detecting the trapped signal. This is verified using both time-domain and frequency-domain simulations in the range of 0.1–90 THz. The lifetimes of these trapped modes are found...
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