Intense supercontinuum generation in the near-ultraviolet range from a 400-nm femtosecond laser filament array in fused silica
Li Dongwei1, Zhang Lanzhi1, Zafar Saba1, Song He1, Hao Zuoqiang1, †, Xi Tingting2, ‡, Gao Xun1, Lin Jingquan1
       

(color online) (a) Counts evolution in the pixel of the spectrometer corresponding to 390 nm with different incident laser energies for a single lens case. (b) Counts evolution in three pixels of spectrometer corresponding to 390 nm, 450 nm, and 500 nm respectively, with 870 μJ incident laser energy.