Critical comparison of the THz performance from ErAs:GaAs and Br-irradiated In0.53Ga0.47As 1.55-µm-driven photoconductive antennas

We compare the THz pulses generated by photoconductive antennas made from two different materials: ErAs:GaAs and Br-irradiated InGaAs. The THz pulses were generated using the same 1550 nm THz time-domain spectroscopy set-up. The detection was realized with an electro-optic crystal, allowing a direct comparison of the performance from the different antennas.