Open AccessWavelength effect on atomic and molecular high harmonic generation driven by a tunable infrared parametric source
Author(s) -
Pengfei Wei,
Chunmei Zhang,
Candong Liu,
Yirong Huang,
Yuxin Leng,
Peng Liu,
Yi Zheng,
Zhinan Zhang,
Ruxin Li,
Zhizhan Xu
Publication year - 2009
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.17.015061
Subject(s) - high harmonic generation , infrared , laser , wavelength , atomic physics , ionization , optics , tunnel ionization , physics , far infrared laser , materials science , optoelectronics , ion , quantum mechanics
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.