Abstract
We have studied the polarization and ellipticity of high-order harmonics from nitrogen molecules using the time-dependent density functional theory. The results of our numerical calculations are in excellent agreement with the data of recent experiments. The theoretical analysis of our results reveals that at least three contributions, namely those from the HOMO, the HOMO-1, and the HOMO-2 orbitals, contribute to the observed high harmonic spectra. Furthermore, we confirm that a proper account of the distribution of the alignment in the molecular ensemble is necessary to obtain agreement with the experimental data.
© 2014 Optical Society of America
Full Article | PDF ArticleMore Like This
Jiawei Li, Peng Liu, Hua Yang, Liwei Song, Shitong Zhao, Hui Lu, Ruxin Li, and Zhizhan Xu
Opt. Express 21(6) 7599-7607 (2013)
Xun Zhu, Chaojin Zhang, Mingliang Gu, and Jinping Yao
Opt. Express 22(7) 7947-7952 (2014)
Yuqing Xia and Agnieszka Jaron-Becker
Opt. Express 24(5) 4689-4697 (2016)