Polariton properties in bigyrotropic medium
  The spectra of polaritons in bigyrotropic medium are received. The ion and electron polarizations of medium under influence of high-frequency electromagnetic and external magnetostatic field are considered. It is shown that by varying of the external magnetostatic field one can control polariton spectrum and velocity of polaritons. 
I. V. Dzedolik, O. S. Karakchieva
physics.optics