Abstract
We show that a plasmonic semiconductor substrate can support highly confined surface plasmons when it is covered by a graphene layer. This occurs when the imaginary part of graphene conductivity and real part of the effective permittivity of the surrounding medium become simultaneously negative. Full-wave electromagnetic simulations demonstrate the occurrence of negative refraction and two-dimensional lensing at the interface separating regions supporting conventional right-handed graphene plasmons and left-handed surface plasmon polaritons.
© 2018 Optical Society of America
Full Article | PDF ArticleMore Like This
Xiaodong Feng, Sen Gong, Renbin Zhong, Tao Zhao, Min Hu, Chao Zhang, and Shenggang Liu
Opt. Lett. 43(5) 1187-1190 (2018)
Dmitry A. Kuzmin, Igor V. Bychkov, and Vladimir G. Shavrov
Opt. Lett. 40(11) 2557-2560 (2015)
K. Y. Bliokh, F. J. Rodríguez-Fortuño, A. Y. Bekshaev, Y. S. Kivshar, and F. Nori
Opt. Lett. 43(5) 963-966 (2018)