High-power terahertz oscillator

A high-power terahertz oscillator, comprising:

• a bow-tie antenna, which includes first and second conductor strips, disposed on a substrate;
• a cavity resonator, which includes two cavities, disposed at an oscillating portion of said bow-tie antenna;
• a resonant tunneling diode, which is cuboid, disposed along a bottom of a wall which defines the two cavities;
• and
• an insulating thin film disposed between said first and second conductor strips of said bow-tie antenna, and disposed between a bottom of said cavity resonator and said second conductor strip of said bow-tie antenna,
• wherein said first conductor strip of said bow-tie antenna is integrated with said cavity resonator, and
• wherein an oscillation in a terahertz frequency band is obtained from said resonant tunneling diode, said bow-tie antenna and said cavity resonator, by applying a bias voltage between said second conductor strip of said bow-tie antenna and a side surface or a top surface of said cavity resonator connected to said first conductor strip of said bow-tie antenna.