Dynamical Tuning of Graphene Plasmonic Resonances by Ultraviolet Illuminations. Issue 6 (22nd January 2018)

• Record Type: Journal Article
• Authors: Dai, Yunyun; Xia, Yuyu; Jiang, Tao; Chen, Ang; Zhang, Yiwen; Bai, Yujie; Du, Guiqiang; Guan, Fang; Wu, Shiwei; Liu, Xiaohan; Shi, Lei; Zi, Jian
• Is Part Of: Advanced optical materials. Volume 6:Issue 6(2018)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2018-01-22
• Subjects: dynamical tuning -- graphene -- mid‐infrared -- nanophotonics -- plasmonics; Optical materials -- Periodicals; Photonics -- Periodicals; 620.11295
• DOI: 10.1002/adom.201701081
• Languages: English
• ISSNs: 2195-1071

Abstract

Abstract: One of the unique features of plasmonic resonances in graphene structures is the enabled tunability through external means. Up to now, electrical gating is extensively adopted to tune graphene plasmonic resonances. This method is, however, limited unfortunately only to graphene structures with electrical connections. Here, a simple and efficient method to tune graphene plasmonic resonances by ultraviolet illuminations in a dynamical and reversible way is demonstrated. It is purely an optical means and can be applied to all kinds of graphene structures without introducing electrodes, ion–gel, or conducting layers required in electrical gating, which is of great significance especially for isolated graphene structures. The optical tuning method could shed new light on graphene‐based tunable devices. Abstract : Using graphene plasmonics to control mid‐infrared light at the nanoscale is one of the main current research themes in photonics. For the first time, it is experimentally shown that by using UV light (i.e., by an all‐optical method), graphene plasmonic materials, even isolated structures without electrical connections, can be dynamically tuned.