Weber, StefanStefanWeberKlier, JensJensKlierJonuscheit, JoachimJoachimJonuscheitvon Freymann, GeorgGeorgvon FreymannMolter, DanielDanielMolter2026-01-262026-01-2620219781728194240https://publica.fraunhofer.de/handle/publica/50459210.1109/IRMMW-THz50926.2021.95675012-s2.0-85125303139We present robust terahertz emitter and detector modules, based on LTG-GaAs photoconductive antennas with nonlinear second-harmonic generation for the use in 1550 nm terahertz time-domain spectroscopy systems. With two different dipole antenna-structures with 20 µm and 60 µm dipole length, the spectral performance of pitch-catch transceivers is adjustable. We achieve peak dynamic ranges of up to 87.7 dB and bandwidths of more than 5.5 THz for 5 minutes integration time.enfalseconference paper