Directional Emission of Multiply Charged Ions During Dissociative Ionization in Asymmetric Two-Color Laser Fields

被引：58

作者：

Betsch, K. J. ^{[1
]}

Pinkham, D. W. ^{[1
]}

Jones, R. R. ^{[1
]}

机构：

[1] Univ Virginia, Dept Phys, Charlottesville, VA 22904 USA

来源：

PHYSICAL REVIEW LETTERS | 2010年 / 105卷 / 22期

关键词：

ELECTRON LOCALIZATION; COHERENT CONTROL; PHASE-CONTROL; PHOTODISSOCIATION;

D O I：

10.1103/PhysRevLett.105.223002

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Intense, asymmetric 1 omega + 2 omega laser fields are used to affect the directional ejection of multiply charged ion fragments from a variety of molecules, including N-2, O-2, CO, HBr, and CO2. By tuning the relative phase, phi, between the two fields, we observe large forward-backward dissociation asymmetries. The largest asymmetries are obtained at the same values of phi for all species, suggesting a common dynamical mechanism. Following an independent phase calibration, the sign of the asymmetry appears to be opposite that expected from the standard enhanced ionization model.

引用

页数：4

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