A high-power subterahertz surface wave oscillator with separated overmoded slow wave structures

Wang Guang-Qiang^{1, 2}, Wang Jian-Guo^{1, 3, †,}, Zeng Peng^{1, 2}, Wang Dong-Yang^{1, 2}, Li Shuang^{1, 2, 3}

Radial distributions of E_z in the two sections of the SWS: (a) SWS1 and (b) SWS2.