Strategy for designing broadband epsilon-near-zero metamaterial with loss compensation by gain media

Autor:	Sun, Lei, Yu, Kin Wah
Rok vydání:	2012
Předmět:	Condensed Matter - Materials Science Physics - Optics
Zdroj:	Appl. Phys. Lett. 100, 261903 (2012)
Druh dokumentu:	Working Paper
DOI:	10.1063/1.4730380
Popis:	A 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 dominating the broadband near-zero permittivity phenomenon in the spectral space.
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1206.1683 Zobrazit plný text záznamu View this record from Arxiv