Total Efficiency of the Optical-to-Terahertz Conversion in Photoconductive Antennas Based on LT-GaAs and In0.38Ga0.62As

Аннотация

The total efficiency of the optical-terahertz conversion η_total in photoconductive antennas (PCAs) on the basis of different materials (LT-GaAs and In_0.38Ga_0.62As) under optical laser excitation at wavelengths of 800 and 1030 nm is studied. It is shown that the photoconductive material factor μτ² has a significant impact on the magnitude of the THz photocurrent and the value of η_total. With the use of electromagnetic modeling, the processes of heat transfer are studied and the power of Joule heating in these PCAs is evaluated.