Polarization-independent metamaterial with broad ultrahigh refractive index in terahertz region
In this article, we report a broadband, isotropic three-dimensional metamaterial design with
extremely high refractive index in the terahertz region. Two peaks of refractive index, 67.9 at
2.14 THz and 66.9 at 2.16 THz, are observed under TE and TM mode polarizations,
respectively. The high refractive index metamaterial maintains low loss with figure of merit as
high as 15 under both polarizations. Moreover, the refractive index does not decrease
sharply at higher frequencies, and shows a very broadband behavior with a full-width at half …
extremely high refractive index in the terahertz region. Two peaks of refractive index, 67.9 at
2.14 THz and 66.9 at 2.16 THz, are observed under TE and TM mode polarizations,
respectively. The high refractive index metamaterial maintains low loss with figure of merit as
high as 15 under both polarizations. Moreover, the refractive index does not decrease
sharply at higher frequencies, and shows a very broadband behavior with a full-width at half …
In this article, we report a broadband, isotropic three-dimensional metamaterial design with extremely high refractive index in the terahertz region. Two peaks of refractive index, 67.9 at 2.14 THz and 66.9 at 2.16 THz, are observed under TE and TM mode polarizations, respectively. The high refractive index metamaterial maintains low loss with figure of merit as high as 15 under both polarizations. Moreover, the refractive index does not decrease sharply at higher frequencies, and shows a very broadband behavior with a full-width at half-maximum (FWHM) of 2 THz.
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