Role of excited states in the elliptically polarized harmonic generation  

作　　者：杜洪川 文一震 王小山 胡碧涛 

机构地区：[1]School of Nuclear Science and Technology, Lanzhou University

出　　处：《Chinese Physics B》2014年第3期219-223,共5页中国物理B（英文版）

基　　金：Project supported by the National Natural Science Foundation of China(Grant Nos.91026021,11075068,10875054,11175076,and 10975065);the Fundamental Research Funds of the Central Universities of China(Grant No.lzujbky-2010-k08)

摘　　要：We theoretically investigate the contribution of the excited state to the ellipticity of the harmonics from H＋ at different orientation angles irradiated by a linearly polarized laser pulse. It is found that the first excited state has a significant influence to the ellipticity of the harmonics, and the contribution of higher excited states to the ellipticity can be neglected. Moreover, the conclusion is not dependent on the laser intensity.We theoretically investigate the contribution of the excited state to the ellipticity of the harmonics from H＋ at different orientation angles irradiated by a linearly polarized laser pulse. It is found that the first excited state has a significant influence to the ellipticity of the harmonics, and the contribution of higher excited states to the ellipticity can be neglected. Moreover, the conclusion is not dependent on the laser intensity.

关 键 词：high-order harmonic generation intense laser excited state ELLIPTICITY 

分 类 号：TN24[电子电信—物理电子学]