%A Zhi-Yuan Huang(黄志远), Ye Dai(戴晔), Rui-Rui Zhao(赵睿睿), Ding Wang(王丁), Yu-Xin Leng(冷雨欣) %T Generation of few-cycle laser pulses: Comparison between atomic and molecular gases in a hollow-core fiber %0 Journal Article %D 2016 %J Chin. Phys. B %R 10.1088/1674-1056/25/7/074205 %P 74205-074205 %V 25 %N 7 %U {https://cpb.iphy.ac.cn/CN/abstract/article_118741.shtml} %8 2016-07-05 %X

We numerically study the pulse compression approaches based on atomic or molecular gases in a hollow-core fiber. From the perspective of self-phase modulation (SPM), we give the extensive study of the SPM influence on a probe pulse with molecular phase modulation (MPM) effect. By comparing the two compression methods, we summarize their advantages and drawbacks to obtain the few-cycle pulses with micro- or millijoule energies. It is also shown that the double pump-probe approach can be used as a tunable dual-color source by adjusting the time delay between pump and probe pulses to proper values.