Amplification and generation of surface plasmon polaritons in a dielectric−HTS film−dielectric structure

Abstract

Propagation of surface polaritons in the dielectric−HTS−dielectric structure is investigated in the temperature region of T <T_c/2, where the structure can be considered nonabsorbing. It is shown that in the region where the polariton wave is appreciably slowed down it can effectively interact with a flux of charged particles and be amplified due to the energy transfer from the drift current wave. It is also shown that a periodic substrate can cause generation of the surface polariton wave in the structure.