Strategy for designing broadband epsilon-near-zero metamaterial with loss compensation by gain media
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AbstractA strategy is proposed to design the broadband gain-doped epsilon-near-zero (GENZ) metamaterial. Based on the Milton representation of effective permittivity, the strategy starts in a dimensionless spectral space, where the effective permittivity of GENZ metamaterial is simply determined by a pole-zero structure corresponding to the operating frequency range. The physical structure of GENZ metamaterial is retrieved from the pole-zero structure via a tractable inverse problem. The strategy is of great advantage in practical applications and also theoretically reveals the cancellation mechanism of the broadband near-zero permittivity phenomenon in the spectral space. (C) 2012 American Institute of Physics. []
All Author(s) ListSun L, Yu KW
Journal nameApplied Physics Letters
Volume Number100
Issue Number26
PublisherAIP Publishing
LanguagesEnglish-United Kingdom
Web of Science Subject CategoriesPhysics; Physics, Applied; PHYSICS, APPLIED

Last updated on 2021-15-04 at 23:51