Chinese Optics Letters, 2020, 18 (9): 092402, Published Online: Jul. 24, 2020   

Active formatting modulation of electromagnetically induced transparency in metamaterials Download: 815次

Author Affiliations
1 College of Computer, National University of Defense Technology, Changsha 410073, China
2 College of Advanced Interdisciplinary Studies, National University of Defense Technology, Changsha 410073, China
3 National Innovation Institute of Defense Technology, Beijing 100010, China
Abstract
We experimentally demonstrate for the first time an active all-optical ultrafast modulation of electromagnetically induced transparency-like effect in a hybrid device of sapphire/Si/metamaterial. From numerical simulations, it can be deducted that the tuning process is attributed to the coupling between the dark mode existing in split-ring resonators and the bright mode existing in cut wire resonators. The transmission amplitude modulation is accompanied by the slow-light effect. In addition, the ultrafast formation process is measured to be as fast as 2 ps. This work should make an important contribution to novel chip-scale photonic devices and terahertz communications.

Hao Sun, Yuhua Tang, Yuze Hu, Jie You, Hengzhu Liu, Xin Zheng. Active formatting modulation of electromagnetically induced transparency in metamaterials[J]. Chinese Optics Letters, 2020, 18(9): 092402.

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