Optical Tamm states for the fabrication of polariton lasers

We propose to embed the ultrathin layer of an organic or inorganic material at the boundary between two specially designed periodic dielectric structures in order to achieve the strong coupling between Frenkel or Wannier-Mott excitons and optical Tamm states localized at the interface. This would allow the fabrication of polariton lasers without microcavities that could be easier from the technological point of view. Analytical formulas are given for the energies of optical Tamm states and the constant of their coupling to excitons. (c) 2005 American Institute of Physics.