Ultra-broadband electromagnetically induced transparency using tunable self-asymmetric planar metamaterials

作者：Han, Song; Yang, Helin^*; Guo, Linyan

来源：Journal of Applied Physics, 2013, 114(16): 163507.

DOI：10.1063/1.4826630

• PLASMON-INDUCED TRANSPARENCY
• TERAHERTZ METAMATERIALS
• REFRACTIVE-INDEX
• NEGATIVE-INDEX
• ANALOG
• RESONANCES
• FREQUENCY

We numerically and experimentally demonstrate a tunable electromagnetically induced transparency (EIT)-like spectral response in a self-asymmetric planar metamaterial in microwave region. This EIT-like physical mechanism is characterized by magnetic dipole coupling induced transparency, which is different from classical properties of EIT-like phenomenon. Our proposed system can be better explained by making an analogy to three-level Lambda-type system. Further study also revealed that an ultra-broadband transparency window with the maximum bandwidth up to 7.8 GHz, extending from 6.1 GHz to 13.9 GHz, could be realized by simply adjusting the depth of the structure.

• 出版日期2013-10-28
• 单位华中师范大学