THz Photoconductive Antenna (PCA)
Application ID: 127921
This model uses the Semiconductor and RF modules to describe a photoconductive antenna (PCA).
A laser pulse is applied on the surface of undoped LT-GaAs to generate electron-hole-pairs, which move under the influence of an external E-field creating a transient electric current pulse. This pulse is then used as the source current density to simulate a subsequent THz pulse.
The main result of the simulation is the far-field spectrum and radiation pattern of the THz pulse.
Learn more in this related blog post: Modeling a THz Photoconductive Antenna with COMSOL Multiphysics®
This model example illustrates applications of this type that would nominally be built using the following products:
however, additional products may be required to completely define and model it. Furthermore, this example may also be defined and modeled using components from the following product combinations:
The combination of COMSOL® products required to model your application depends on several factors and may include boundary conditions, material properties, physics interfaces, and part libraries. Particular functionality may be common to several products. To determine the right combination of products for your modeling needs, review the Tabella delle Funzionalità and make use of a free evaluation license. The COMSOL Sales and Support teams are available for answering any questions you may have regarding this.