Enhanced laser-induced plasma channels in air

Zuo Yanlei^{1, 2, 3}, Wei Xiaofeng^{1, 2, 3}, Zhou Kainan^{1, 2, 3}, Zeng Xiaoming^{1, 2, 3}, Su Jingqin^{1, 2, 3}, Jiao Zhihong¹, Xie Na^{1, 2}, Wu Zhaohui^{1, †,}

(a) Density distributions and (b) interferogram of large-scale uniform plasma channel (delay) = 60 ns, f = 100 (mm). In panel (b), E = 250 mJ.