Characteristics of Photonic Crystal Cavity Based Infrared Photodetectors

Theoretical and experimental research results on the characteristics of photonic crystal quantum dot infrared photodetectors are presented. The surface normal absorption power in a single defect photonic crystal cavity for different absorption values and the absorption enhancement factor for different absorption values in single defect and defect free cavities are investigated. Current-voltage characteristics at different temperatures and the spectral responses of the devices with and without photonic crystal cavities are measured.