This paper describes an experimental model for determining the characterization of a photoconductive antenna in the terahertz band, in order to detect images in this frequency band. The photoconductive antennas consist of a pair of metal electrodes deposited on a semiconductor substrate, e.g., GaAs grown at low temperature, which upon being excited by a ultra-short laser pulse and biased emit signals in the THz band. To characterize and determine its irradiation, a pyroelectric sensor mounted on a rotator with optical precision is used as detector. The results of the measurements and images determined with the experimental set up that is proposed in this work are shown.Centro de Investigaciones ÓpticasFacultad de Ingenierí
