A Rigourous Analysis of a Photoconductive Antenna in THz Regime by Using an Optoelectronic Solver
Paper ID : 1592-IST
1asad amirhosseini *, 2Ramin Emadi, 2Reza Safian
1Isfahan university of technology
2Isfahan University of Technology
A photoconductive antenna (PCA) is modeled and investigated through a computational approach in a rigorous manner without any approximation. The optoelectronic solver, SILVACO TCAD software, is used to ﬁnd absorbed optical intensity and optical carrier generation rate inside the fast photoconductive region through solving an optical scattering problem. Then, the equations governing the charge carrier transport inside the photoconductor are solved to give THz photo-current by considering realistic material parameters. Using the proposed simulation method the effects of PCA parameters on the THz photo-current is rigorously investigated for several geometries and various factors such as carrier mobility, free electrodes gaps and gaps with various electrodes.