Generation of isolated 38as pulse from the oriented CO molecule

28th International Conference on Photonic, Electronic and Atomic Collisions

Pan, Yun^1 ; Zhao, Song-Feng^1 ; Zhou, Xiao-Xin^1

College of Physics and Electronic Engineering, Northwest Normal University, Lanzhou

730070, China^1

关键词: Central frequency;    Chirped lasers;    CO molecule;    Exposed to;    High order harmonic generation;    Super continuum;    Ultrabroad supercontinuum;    Unipolar pulse;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/488/3/032029/pdf
DOI  :  10.1088/1742-6596/488/3/032029

来源: IOP

【 摘 要 】

We theoretically investigated the high-order harmonic generation (HHG) from the oriented gas-phase CO molecule exposed to the combination of an intense few-cycle chirped laser and a unipolar pulse. The HHG is dramatically extended and a ultrabroad supercontinuum spectra in the plateau is generated by adding a unipolar pulse to the few-cycle chirped laser at a proper time. By superposing the supercontinuum harmonics centered at several different central frequencies, we produced several isolated pulses in which the shortest one achieves 38-as.