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, †,}

Experimental setup to produce plasma in the air by laser sparks. SHG is the abbreviation for the second harmonic generation.