TeraFET amplifier detector

We show that feeding the phase-shifted terahertz (THz) signal into the stages of a TeraFET amplifier dramatically increases the response modulated at the amplifier mid band. TeraFET SPICE/ADS simulations show how the constructive interference due the optimized phase shift of the THz signal fed into the subsequent stages enhances the response. The number of stages is only limited by the THz beam cross-section, i.e. by the THz wavelength. This “travelling wave amplifier” approach enables orders of magnitude enhancement in the THz detector response.