Long-range, photon-mediated exciton hybridization in an all-organic, one-dimensional photonic crystal.

We demonstrate an all-organic, one-dimensional photonic crystal tuned to the regime of strong exciton-photon coupling. The structure consists of a high index of refraction light-absorbing active layer periodically distributed in a low index of refraction nonabsorbing background medium. The strongly coupled state in this structure is shared between multiple active layers separated by distances longer than the wavelength of light in the structure. In order to investigate the potential for long-range energy transfer, photon-mediated exciton hybridization is demonstrated between multiple absorbing species spatially separated in the photonic crystal.