Piezoelectric-induced polariton coupling in a superlattice.
Propagation of electromagnetic waves in a piezoelectric superlattice is studied. Because of the piezoelectric effect, a coupling between two orthogonally polarized electromagnetic waves is induced by the superlattice vibration. As a consequence of the strong coupling, two types of polariton modes are found: one is supported in the band gap while the other prohibited. This unusual coupling effect is not present in classical lattices.
Huang
Cheng-ping
CP
National Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210093, China.
Zhu
Yong-yuan
YY