https://doi.org/10.1140/epjp/s13360-021-01246-w
Regular Article
Coherent control of surface plasmon polariton via spontaneously generated coherence
1
Department of Physics, University of Malakand Chakdara, Dir(L), Pakistan
2
Department of Physics, Abbottabad University of Science and Technology, Havellain, Pakistan
3
Department of Physics, Gomal University, Dera Ismail Khan, Pakistan
4
School of Physics, Huazhong University of Science and Technology, 430074, Wuhan, People’s Republic of China
Received:
7
August
2020
Accepted:
29
January
2021
Published online:
1
March
2021
We investigate the control over surface plasmon polaritons (SPPs) using the interface between a four-level tripod-type atomic system and a nanocomposite medium under the effect of spontaneously generated coherence (SGC). The absorption and dispersion spectra of SPPs show interesting behavior with SGC effect at the interface. Skin depth of SPPs can be controlled via strength of SGC. The ratio of nanoparticles in the medium also affects different features of SPPs. The horizontal distances traversed by SPPs were also modified with SGC. We show the quantum confinement of SPPs at the interface for different wavelengths. These results can find important practical applications in the fields of atomic spectroscopy, plasmon-based optical devices and sensors technology.
© This is a U.S. government work and not under copyright protection in the U.S.; foreign copyright protection may apply 2021
