Research on Y-Band Double Grating Diffraction Radiation Oscillators

An open resonance systems (ORS) composed of cylindrical mirror and planar mirror was combined with double comb gratings, which was investigated in this paper. The results show that in such structure the electron beam will interacts with the quasi-optical mode in the cavity efficiently. The output power can reach to more than 3 W at 0.33 THz with about 2 GHz band width. This radiation system provides a potential way to develop high power and compact THz sources.