A 0.33-THz second-harmonic frequency-tunable gyrotron

Li Zheng-Di^{1, 2}, Du Chao-Hai³, Qi Xiang-Bo³, Luo Li^{1, 2}, Liu Pu-Kun^{3, †,}

Profiles of normalized filed versus length at 27 ns (blue solid line) and 32.5 ns (black dashed line).