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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 21, Iss. 5 — Mar. 11, 2013
  • pp: 5255–5268

Influence of large permanent dipoles on molecular orbital tomography

Xiaosong Zhu, Meiyan Qin, Qingbin Zhang, Yang Li, Zhizhan Xu, and Peixiang Lu  »View Author Affiliations


Optics Express, Vol. 21, Issue 5, pp. 5255-5268 (2013)
http://dx.doi.org/10.1364/OE.21.005255


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Abstract

The influence of large permanent dipoles on molecular orbital tomography via high-order harmonic generation (HHG) is investigated in this work. It is found that, owing to the modification of the angle-dependent ionization rate resulting from the Stark shift, the one-side-recollision condition for the tomographic imaging can not be satisfied even with the few-cycle driving pulses. To overcome this problem, we employ a tailored driving pulse by adding a weak low-frequency pulse to the few-cycle laser pulse to control the HHG process and the recollision of the continuum electrons are effectively restricted to only one side of the core. Then we carried out the orbital reconstruction in both the length and velocity forms. The results show that, the orbital structure can only be successfully reproduced by using the dipole matrix elements projected perpendicular to the permanent dipole in both forms.

© 2013 OSA

OCIS Codes
(190.4160) Nonlinear optics : Multiharmonic generation
(190.7110) Nonlinear optics : Ultrafast nonlinear optics

ToC Category:
Nonlinear Optics

History
Original Manuscript: November 19, 2012
Revised Manuscript: February 17, 2013
Manuscript Accepted: February 19, 2013
Published: February 25, 2013

Citation
Xiaosong Zhu, Meiyan Qin, Qingbin Zhang, Yang Li, Zhizhan Xu, and Peixiang Lu, "Influence of large permanent dipoles on molecular orbital tomography," Opt. Express 21, 5255-5268 (2013)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-21-5-5255


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