An arrangement for an antenna for generating or receiving terahertz radiation can comprise a photoactive layer which can be activated by optical radiation in the range 1200 nm to 1700 nm, a substrate that is transparent to optical radiation and to which the photoactive layer is attached, and a first adhesion-promoting layer. The first adhesion-promoting layer is arranged between the photoactive layer and the substrate and connects them to each other, wherein first adhesion-promoting layer has a layer thickness of no more than 5 μm. The arrangement can also include and a carrier transparent to the optical radiation. The substrate is attached to the carrier and is arranged between the photoactive layer and the carrier. The substrate and the carrier can be made of the same material.