Electrically tunable absorber based on nonstructured graphene. (27th October 2015)

• Record Type: Journal Article
• Authors: Ye, Caiyan; Zhu, Zhihong; Xu, Wei; Yuan, Xiaodong; Qin, Shiqiao
• Is Part Of: Journal of optics. Volume 17:Number 12(2015:Dec.)
• Publication Date: 2015-10-27
• Subjects: absorber -- nonstructured graphene -- tunable; Optics -- Periodicals; 535.05
• DOI: 10.1088/2040-8978/17/12/125009
• Languages: English
• ISSNs: 2040-8978

Abstract

Abstract: We demonstrate numerically that a tunable absorber with absorption of 99.94% in the far infrared range can be obtained using a nonstructured graphene. The mechanism originates from a nonstructured graphene film supported on a periodical dielectric array that can show Fermi level modulation periodically and produce plasmonic resonances in the far infrared range. The nonstructured graphene can avoid the unexpected edge effects and does not influence the unique properties of graphene, which will be helpful in practice to achieve the unity absorption and facilitate the development of many related applications.