Abstract
We investigated the optical properties of one dimensional photonic crystal (1D-PC) microcavity with a wedge-shaped cavity layer containing fluorescent pseudoisocyanine (PIC)-gelatin and nonfluorescent PIC–H1.07Ti1.73O4∙nH2O (HTO) nanohybrids. In the case of the PIC-gelatin, the formation of cavity polaritons with a Rabi splitting energy of 49.2 meV was clearly observed. Contrary to our expectations, the formation of cavity polaritons in the case of the PIC–HTO nanohybrids was also observed, even though their splitting energy of 5.8 meV was small. Although different possible explanations were considered, at present, there is insufficient information to completely explain the phenomena. The formation of cavity polaritons with nonfluorescent excitons is indeed very rare and therefore interesting.
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