title: Wavelength effect on atomic and molecular high harmonic generation driven by a tunable infrared parametric source.
abstract: We experimentally investigate the wavelength effect on high-order harmonic generation (HHG) in CH(4) molecules and Xe atoms driven by a tunable infrared parametric source, and observe that the molecular HHG around the vibrational resonance is more sensitive to the driver wavelength than HHG from an atomic gas with comparable ionization potential. The results can be attributed to the light nuclear motion induced by the driving laser field, and it becomes possible to control the proton vibration in the molecular HHG by tuning the infrared wavelength of the driving laser.
authors.affiliation: State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China.
authors.forename: Pengfei
authors.initials: P
authors.lastname: Wei
authors.forename: Chunmei
authors.initials: C
authors.lastname: Zhang
authors.forename: Candong
authors.initials: C
authors.lastname: Liu
authors.forename: Yansui
authors.initials: Y
authors.lastname: Huang
authors.forename: Yuxin
authors.initials: Y
authors.lastname: Leng
authors.forename: Peng
authors.initials: P
authors.lastname: Liu
authors.forename: Yinghui
authors.initials: Y
authors.lastname: Zheng
authors.forename: Zhinan
authors.initials: Z
authors.lastname: Zeng
authors.forename: Ruxin
authors.initials: R
authors.lastname: Li
authors.forename: Zhizhan
authors.initials: Z
authors.lastname: Xu