Terahertz frequency generation: electronic and photonic approach

摘要

Regarding generation using non-linear electronic components, we note uneven results from frequency multiplication by heterostructure varactor diodes. Regarding laser oscillators, initial demonstration was recently performed at 4 THz using quantum cascade lasers in the middle infrared region. A combined photonic-electronic approach bridges the gap between microwaves and optics, with development of suitable solid-state sources emerging as a major challenge.