Influence of cutting off position of plasma filament formed by two-color femtosecond laser on terahertz generation
Xue Zhan-Qiang1, Shang Li-Ping1, 2, †, Deng Hu1, Zhang Qian-Cheng1, Liu Quan-Cheng1, Qu Wei-Wei1, Li Zhan-Feng3, Wang Shun-Li1
       

(color online) System stability. (a) The THz time-domain waveforms of 30 repetitions, the inset is the THz frequency-domain spectrum, peak frequency 0.64 THz. (b) The peak to peak value of each THz time-domain waveform in (a).