High Power Generation of THz From 1550-NM Photoconductive Emitters
Two photoconductive emitters - one with a self-complementary square spiral antenna, and the other with a resonant slot antenna - were fabricated on a GaAs epilayer embedded with ErAs quantum dots. Driven with 1550 nm mode-locked lasers, ~117 μW broadband THz power was generated from the device with the spiral antenna, and ~1.2 μW from the device with resonant slot antenna. The optical-to-THz conversion is through extrinsic photoconductivity.
& Mirin, A.
(2018). High Power Generation of THz From 1550-NM Photoconductive Emitters. Optics Express, 26 (11), 14472-14478.