Abstract

Tunable ultra-wideband achromatic plasmonic Airy beams are demonstrated on graphene surfaces. Surface plasmonic polaritons are excited using diffractive gratings. The phase and amplitude of plasmonic waves on the graphene surface are determined by the relative position between the grating arrays and the duty ratio of the grating unit cell, respectively. The transverse acceleration and nondiffraction properties of plasmonic waves are observed. The achromatic Airy plasmons with identical acceleration trajectory at different excited frequencies can be achieved by tuning dynamically the Fermi energy of graphene without reoptimizing the grating structures. The proposed devices may find applications in photonics integrations and surface optical manipulation.

© 2017 Optical Society of America

On-grating graphene surface plasmons enabling spatial differentiation in the terahertz region

Yisheng Fang, Yijie Lou, and Zhichao Ruan
Opt. Lett. 42(19) 3840-3843 (2017)

Unidirectional launching and elongating propagation of airy surface plasmon polaritons by a metasurface coupling grating

Jin Jiang, Fengkai Meng, Yang Zhao, Zheyu Fang, and Feng Lin
Opt. Lett. 44(11) 2815-2818 (2019)

Simultaneous Airy beam generation for both surface plasmon polaritons and transmitted wave based on metasurface

Sen Wang, Xinke Wang, and Yan Zhang
Opt. Express 25(20) 23589-23596 (2017)

Multi-band perfect plasmonic absorptions using rectangular graphene gratings

Sheng-Xuan Xia, Xiang Zhai, Yu Huang, Jian-Qiang Liu, Ling-Ling Wang, and Shuang-Chun Wen
Opt. Lett. 42(15) 3052-3055 (2017)

Negative reflection from metal/graphene plasmonic gratings

Xiaopeng Su, Zeyong Wei, Chao Wu, Yang Long, and Hongqiang Li
Opt. Lett. 41(2) 348-351 (2016)