Helicity sensitive terahertz radiation detection by field effect transistors

Helicity sensitive terahertz radiation detection by dual-grating-gate high electron mobility transistors

Nonresonant Response Characteristics to Terahertz Radiation of FETs: Influence of Magnetic Field

Nonresonant detection on terahertz radiation of field effect transistors by the influence of magnetic field is studied in this paper. The influence of the magnetic field upon the electron mobility in the transistor channel is discussed and the corresponding influence on the nonresonant detection photoresponse is analyzed in detail. Based on the work before, the numerical tool has been modified ...

Strained-Si modulation doped field effect transistors as detectors of terahertz and sub-terahertz radiation

Strained-Si modulation doped field effect transistors have been studied as detectors of 0.2 THz and 1.6 THz electromagnetic radiation at room temperature. The difference in the gate voltage dependences for 0.2 THz and 1.6 THz radiation and spatial pattern of the transistor response to focused 1.6 THz radiation confirms that the mechanism of detection is linked to the excitations of the two-dime...

Terahertz Emission and Detection by Plasma Waves in Nanometer Size Field Effect Transistors

Plasma oscillations in nanometer field effect transistors are used for detection and generation of electromagnetic radiation of THz frequency. Following first observations of resonant detection in 150 nm gate length GaAs HEMT, we describe recent observations of room temperature detection in nanometer Si MOSFETs, resonant detection in GaN/AlGaN HEMTs and improvement of room temperature detection...

Plasma waves Terahertz detection by field effect transistor in Quantinzing magnetic fields

Detection of THz radiation by a Field Effect Transistor InGaAs/InAlAs transistor was investigated at 4.2 K as a function of the magnetic field and gate voltage. We observed oscillations of the photovoltaic signal analogous to Shubnikov-de Haas oscillations, as well as their strong enhancement at the cyclotron resonance conditions. The results are successfully quantitatively described within the...