Time-domain numerical modeling of THz receivers based on photoconductive antennas Moreno, Enrique Hemmat, Z. Rubio Bretones, Amelia Consuelo González García, Salvador Roldán Aranda, Juan Bautista Terahertz Photoconductive antenna Receivers Terahertz time domain spectroscopy Terahertz imaging Hybrid FDTD methods We present here a simulator that solves the main semiconductor charge and transport equations coupled to Maxwell equations to study receivers based on photoconductive antennas (R-PCAs). Making use of this tool we were able to correctly characterize the operation of these antennas. In doing so, we compared simulations with the results of the semi-empirical expression ITHz(t) ∝ σc(t) ∗ ETHz(t) employed to evaluate the detected photo-current by means of the convolution between the photoconductivity in the receiver and the electric field linked to the emitter antenna. We were able to accurately reproduce experimental data with our simulation tool. These kind of tools are essential to model photoconductive antennas, a fundamental step needed for the development of terahertz time domain spectroscopy (THz-TDS) applications based on PCAs. 2018-04-13T08:41:08Z 2018-04-13T08:41:08Z 2015 info:eu-repo/semantics/article Moreno, E; et. al. Time-domain numerical modeling of THz receivers based on photoconductive antennas. Journal of the Optical Society of America B, Vol 32, pp 2034-2041, 2015 [http://hdl.handle.net/10481/50196] http://hdl.handle.net/10481/50196 10.1364/JOSAB.32.002034 eng http://creativecommons.org/licenses/by-nc-nd/3.0/ info:eu-repo/semantics/openAccess Creative Commons Attribution-NonCommercial-NoDerivs 3.0 License Optical Society of America