title: Dual-mode electromagnetically induced transparency and slow light in a terahertz metamaterial.
abstract: In this Letter, we construct a metamaterial with dual-mode electromagnetically induced transparency (EIT)-like behavior by introducing "bright atoms," "quasi-dark atoms," and "dark atoms" simultaneously. The dual-mode EIT-like behavior has been demonstrated both experimentally and theoretically in terahertz (THz) regime. At two EIT-like modes, slow light is also observed as two time-delayed wave packets, and the effective group refractive index can reach 10(2). Furthermore, stable dual-mode EIT-like behavior is verified in this metamaterial for a wide range of oblique incident angles. Our work provides a design approach to mimic dual-mode EIT, and such an approach may achieve potential applications on miniaturized and versatile THz devices.
authors: Kun
authors: K
authors: Zhang
authors: Cheng
authors: C
authors: Wang
authors: Ling
authors: L
authors: Qin
authors: Ru-Wen
authors: RW
authors: Peng
authors: Di-Hu
authors: DH
authors: Xu
authors: Xiang
authors: X
authors: Xiong
authors: Mu
authors: M
authors: Wang