A THz-band emitter based on a single-walled carbon nanotube with encapsulated fullerenes

We propose a theoretical model for a THz-band emitter based on a carbon nanopeapod formed by a nanotube (10,10) with three encapsulated fullerenes C60. The radiating element is the free charged fullerene C60, which rapidly oscillates in a potential well created by the atomic framework of the nanotube and several uncharged fullerenes polymerized with the tube, as well as with each other. Motion of the charged fullerene and the radiation frequency can be controlled using an external electric field. It was found that stable THz radiation with the frequency of 0.36 THz could be realized at 300 K in the dc electric field of 10 V/m.