High-speed Terahertz PIN Photodiode with WR-3 Rectangular Waveguide Output

In this paper we present a photonics-based terahertz source working in the J-band (220-325 GH). A high-speed InGaAs/InGaAsP PIN photodiode is integrated in a rectangular waveguide WR-3 package for photonic to terahertz conversion. An output power of 36.3 μW is achieved. To the best of our knowledge, this is the first WR-3-integrated emitter based on a PIN photodiode.