Generation of few-cycle laser pulses: Comparison between atomic and molecular gases in a hollow-core fiber

Huang Zhi-Yuan^{1, 2}, Dai Ye¹, Zhao Rui-Rui², Wang Ding^{2, †,}, Leng Yu-Xin^{2, ‡,}

(a) and (b) The temporal and spectral profiles of the compressed pulses. Blue solid lines and red dotted lines, represent the first and second probe pulses with different delays 4.27 ps and 8.40 ps at central wavelength 800 nm and 400 nm, respectively.