Exciton-polaritons and switching waves in organic photonics

We develop a mean-field electron-vibrational theory of Frenkel exciton polaritons in organic dye structures. The theory contains experimentally measured quantities that make it closely related to experiment. Between other things, we explain for the first time the additional red shift of the H-aggregate absorption spectra (that are blue-shifted as a whole). We apply the theory to experiment on fraction of a millimeter propagation of Frenkel exciton polaritons in photoexcited organic nanofibers made of thiacyanine dye. In the second part of the paper we study transverse phenomena such as switching waves in organic thin films.