Dohms, AlexanderAlexanderDohmsKeyvaninia, ShahramShahramKeyvaniniaBreuer, SteffenSteffenBreuerDeumer, MilanMilanDeumerHeßelmann, Tina-CelineTina-CelineHeßelmannGruner, MarkoMarkoGrunerLiebermeister, LarsLarsLiebermeisterSchell, MartinMartinSchellKohlhaas, RobertRobertKohlhaas2025-06-172025-06-172024https://publica.fraunhofer.de/handle/publica/48874610.1109/IRMMW-THz60956.2024.106975952-s2.0-85207166740We present a fiber-coupled terahertz (THz) time-domain spectrometer with InGaAs photoconductive membranes (PCM) antennas on silicon as emitter and receiver. With these novel antennas we achieve a very high peak dynamic range of 115 dB and a record bandwidth of 10 THz. This represents an increase of 3.5 THz compared to state-of-the art photoconductive antennas (PCAs), which are restricted by THz absorption in the InP:Fe substrate.enfalsehybrid integrationIII-V on Siphotoconductive antennasubstrate transferterahertz time-domain spectroscopyultra broadbandconference paper