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 (c) The wavelength shift of the probe pulses with (blue up triangle lines) or without (red down triangle lines) SPM effect. (b) and (d) The spectral broadening factor with (green circle lines) or without (yellow square lines) considering SPM effect.