Fast Time Response of THz detection in JLFET

The speed of detectors represents a crucial point in the definition of the communication system using THz carrier. Rectification performed by MOS structures was usually detected by lock-in amplifiers, thus appears quite slow. We show by theoretical analysis and TCAD simulations that JLFET is intrinsically very fast, and that velocity may increase by a new approach of detection through the gate capacitance charging. The experimental results confirm the conclusions.