摘要
Circularly and elliptically polarized high-order harmonics have unique advantages when used in studying the chiral and magnetic features of matter.Here,we studied the polarization properties of high-order harmonics generated from alignment nitrogen molecules driven by cross-linearly polarized two-color laser fields.Through adjusting various laser parameters and targets,such as the relative phase,the crossing angle,the intensity ratio of the driving fields,and the molecular alignment angle,we obtained highly elliptically polarized high-order harmonics with the same helicity in a wide spectral range.This provides a possible effective way to generate elliptically polarized attosecond pulses.Finally,we showed the probability of controlling the spectral range of elliptically polarized harmonics.
作者
翟春洋
吴银梦
秦玲玲
李翔
史璐珂
张可
康帅杰
李整法
李盈傧
汤清彬
余本海
Chunyang Zhai;Yinmeng Wu;Lingling Qin;Xiang Li;Luke Shi;Ke Zhang;Shuaijie Kang;Zhengfa Li;Yingbin Li;Qingbin Tang;Benhai Yu(College of Physics and Electronic Engineering,Xinyang Normal University,Xinyang 464000,China)
基金
Project supported by the National Natural Science Foundation of China(Grant Nos.12104389,12074329,and 12004323)
the Nanhu Scholars Program for Young Scholars of XYNU.
