The characteristics of surface plasmon polaritons at a chiral–metal interface are analyzed in detail. Compared to conventional surface plasmon waves at a dielectric–metal interface, it is shown that chiral surface plasmon waves have distinguishing features such as the presence of an s-wave at the metal surface, the existence of a cutoff frequency and chirality value, and the dependence of the propagation length on the chiral parameter. These properties of chiral surface plasmon waves can be exploited for on-chip chiral sensing and enantiometric detection applications.
© 2014 Optical Society of America
Optics at Surfaces
Original Manuscript: October 31, 2013
Revised Manuscript: February 21, 2014
Manuscript Accepted: February 23, 2014
Published: March 26, 2014
Guangcan Mi and Vien Van, "Characteristics of surface plasmon polaritons at a chiral–metal interface," Opt. Lett. 39, 2028-2031 (2014)