https://doi.org/10.1140/epjp/i2018-12386-1
Regular Article
The hybrid mode propagation of surface plasmon polaritons at the interface of graphene and a chiral medium
1
Department of Physics, University of Malakand, at Chakdara Dir (L), Chakdara, Pakistan
2
Department of Mathematics, University of Malakand, at Chakdara Dir (L), Chakdara, Pakistan
3
Department of Physics, University of the Lahore, Punjab, Pakistan
4
Physics,Shaheed Benazir Bhutto University, Sheringal, Pakistan
5
Department of Physics, RIPHAH International University, sector 1–14 campus, Islamabad, Pakistan
* e-mail: aminoptics@outlook.com
Received:
27
June
2018
Accepted:
19
October
2018
Published online:
11
December
2018
This study presents a theoretical approach to investigate the distinguishing features of surface plasmon polaritons (SPPs) at the interface of graphene and a four-level chiral atomic medium. The SPPs show the left and the right circularly polarized (LCP and RCP) propagation modes due to the cross coupling of electric and magnetic fields in the chiral medium. The two propagation modes of the SPPs are controlled with the strengths of control fields and their corresponding phases under the effect of Kerr nonlinearity (KNL). A 0.15 radian angle of divergence is calculated between the LCP and RCP modes of the SPPs under the effect of KNL, which is further modified to 0.5 radian with the strengths of control fields at a propagation length equal to 
. The possibility of such hybrid mode SPPs propagation may result into new technological applications in the design of more compact nano-photonic devices.
© Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature, 2018
