Photoelectric tunable-step terahertz detectors: a study on optimal antenna parameters, speed, and temperature performance.

ABSTRACT: Field effect transistors have shown promising performance as terahertz (THz) detectors over the past few decades. Recently, a quantum phenomenon, the in-plane photoelectric effect, was discovered as a novel detection mechanism in gated two-dimensional electron gases (2DEGs), and devices based on this effect, photoelectric tunable-step (PETS) THz detectors, have been proposed as sensitive THz detectors. Here, we demonstrate a PETS THz detector based on GaAs/AlGaAs heterojunction using a dipole antenna. We investigate the dependence of the in-plane photoelectric effect on parameters including the dimensions and the operating temperature of the device. Two figures of merit within the 2DEG, the maximum electric field and the radiation-induced ac-potential difference, are simulated to determine

SUBMITTER: Chen R 

PROVIDER: S-EPMC11501986 | biostudies-literature | 2024 Apr

REPOSITORIES: biostudies-literature