Nonsequential double ionization of diatomic molecules by elliptically polarized laser pulses

doi:10.1088/1674-1056/23/10/103302

Abstract Using the classical ensemble method, we investigate nonsequential double ionization (NSDI) of diatomic molecules by elliptically polarized laser pulses. The results show that the ellipticity of the laser field has a strong suppression effect on NSDI probabilities both in parallel and perpendicular alignments. The double ionization (DI) channel is commonly dominated by NSDI, and the NSDI channel changes with ellipticity. As ellipticity increases, more and more NSDIs occur through recollision excitation with subsequent field ionization (RESI). Moreover, like the case of linear polarization, the two electrons involved in NSDI for perpendicularly aligned molecules are more likely to emit into the opposite hemispheres as compared to the case of parallel alignment. Additionally, this alignment effect increases as ellipticity increases.

Keywords: nonsequential double ionization electron correlation molecular alignment effect

Received: 20 November 2013
Revised: 21 April 2014
Accepted manuscript online:

PACS:	33.80.Rv	(Multiphoton ionization and excitation to highly excited states (e.g., Rydberg states))
	33.80.Wz	(Other multiphoton processes)
	34.80.Gs	(Molecular excitation and ionization)

Fund: Project supported by the Fund for Excellent Youths of Education Department of Hubei Province, China (Grant No. Q20133001), the Natural Science Foundation of Hubei Province, China (Grant No. 2013CFB015), and the Special Fund of Theoretical Physics, China (Grant No. 11347189).

Corresponding Authors: Tong Ai-Hong
E-mail: tah1979@126.com

About author: 33.80.Rv; 33.80.Wz; 34.80.Gs

Cite this article:

Tong Ai-Hong (童爱红), Liu Dan (刘丹), Feng Guo-Qiang (冯国强) Nonsequential double ionization of diatomic molecules by elliptically polarized laser pulses 2014 Chin. Phys. B 23 103302


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Nonsequential double ionization of diatomic molecules by elliptically polarized laser pulses

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