中国物理B ›› 2017, Vol. 26 ›› Issue (9): 94209-094209.doi: 10.1088/1674-1056/26/9/094209

• ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS • 上一篇    下一篇

Odd-even harmonic emission from asymmetric molecules: Identifying the mechanism

Jianguo Chen(陈建国), Shujuan Yu(于术娟), Yanpeng Li(李雁鹏), Shang Wang(王赏), Yanjun Chen(陈彦军)   

  1. College of Physics and Information Technology, Shaan'xi Normal University, Xi'an 710119, China
  • 收稿日期:2017-03-22 修回日期:2017-04-25 出版日期:2017-09-05 发布日期:2017-09-05
  • 通讯作者: Yanjun Chen E-mail:chenyanjun@snnu.edu.cn
  • 基金资助:

    Project supported by the National Natural Science Foundation of China (Grant No. 11274090) and the Fundamental Research Funds for the Central Universities, China (Grant No. SNNU. GK201403002).

Odd-even harmonic emission from asymmetric molecules: Identifying the mechanism

Jianguo Chen(陈建国), Shujuan Yu(于术娟), Yanpeng Li(李雁鹏), Shang Wang(王赏), Yanjun Chen(陈彦军)   

  1. College of Physics and Information Technology, Shaan'xi Normal University, Xi'an 710119, China
  • Received:2017-03-22 Revised:2017-04-25 Online:2017-09-05 Published:2017-09-05
  • Contact: Yanjun Chen E-mail:chenyanjun@snnu.edu.cn
  • Supported by:

    Project supported by the National Natural Science Foundation of China (Grant No. 11274090) and the Fundamental Research Funds for the Central Universities, China (Grant No. SNNU. GK201403002).

摘要:

We study odd-even high-order harmonic generation (HHG) from oriented asymmetric molecules HeH2+ numerically and analytically. The variational method is used to improve the analytical description of the ground-state wave function for the asymmetric system, with which the ground-state-continuum-state transition dipole is evaluated. The comparison between the odd-even HHG spectra and the improved dipoles allows us to identify and clarify the complex generation mechanism of odd-even harmonics from asymmetric molecules, providing deep insights into the relation between the odd-even HHG and the asymmetric molecular orbital.

关键词: odd-even harmonics, asymmetric molecules, dipoles, variational method

Abstract:

We study odd-even high-order harmonic generation (HHG) from oriented asymmetric molecules HeH2+ numerically and analytically. The variational method is used to improve the analytical description of the ground-state wave function for the asymmetric system, with which the ground-state-continuum-state transition dipole is evaluated. The comparison between the odd-even HHG spectra and the improved dipoles allows us to identify and clarify the complex generation mechanism of odd-even harmonics from asymmetric molecules, providing deep insights into the relation between the odd-even HHG and the asymmetric molecular orbital.

Key words: odd-even harmonics, asymmetric molecules, dipoles, variational method

中图分类号:  (Frequency conversion; harmonic generation, including higher-order harmonic generation)

  • 42.65.Ky
32.80.Rm (Multiphoton ionization and excitation to highly excited states)