Zinc oxide single crystal as substrate for photoconductive antenna device generating radiation in the terahertz frequency region

Terahertz (THz) radiation emission from photoconductive antenna fabricated on single crystal ZnO is presented. Results reveal that ZnO is highly transparent in the visible, near-infrared, mid-infrared and THz frequency regions. These characteristics will open up the possibility of using ZnO as material for the realization of integrated active optics.