Development of Terahertz-wave Photomixer Module Using a Uni-traveling-carrier Photodiode

Abstract

As a promising power source for various terahertz-wave (THz-wave) applications, we have developed a compact, lightweight, high-power, and ultrawideband THz-wave photomixer module using a uni-traveling-carrier photodiode.The module operates at room temperature and exhibits output power of over 0.5 mW at 0.35 THz and a 0-dB-down bandwidth of 260 GHz.Its output frequency can be swept continuously over an extremely wide frequency range in the terahertz band.In this article, we report on the photomixing technique using an ultrahigh-speed, high-power photodiode to generate THz-waves and the development of two versions of the photomixer module.