Selective steering of molecular multiple dissociative channels with strong few-cycle laser pulses

We report that multiple dissociative channels of carbon monoxide (CO) molecules are selectively controlled using intense phase-stabilized few-cycle laser fields (4.2 fs, 740 nm, 6×10(14)  W/cm(2)). The controllable emission direction of C(2+) from charge asymmetrical dissociation and ionization of C...

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Bibliographic Details
Published in:Physical review letters 2011-02, Vol.106 (7), p.073004-073004, Article 073004
Main Authors: Liu, Yunquan, Liu, Xianrong, Deng, Yongkai, Wu, Chengyin, Jiang, Hongbing, Gong, Qihuang
Format: Article
Language:English
Subjects:
ATOMIC AND MOLECULAR PHYSICS
CARBON COMPOUNDS
CARBON IONS
CARBON MONOXIDE
CARBON OXIDES
CHALCOGENIDES
CHARGED PARTICLES
CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS
DISSOCIATION
ELECTROMAGNETIC RADIATION
ENERGY-LEVEL TRANSITIONS
EXCITATION
IONIZATION
IONS
LASER RADIATION
LASERS
MATHEMATICAL MODELS
OXIDES
OXYGEN COMPOUNDS
PARTICLE MODELS
PULSES
RADIATIONS
STRONG-COUPLING MODEL
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Summary:We report that multiple dissociative channels of carbon monoxide (CO) molecules are selectively controlled using intense phase-stabilized few-cycle laser fields (4.2 fs, 740 nm, 6×10(14)  W/cm(2)). The controllable emission direction of C(2+) from charge asymmetrical dissociation and ionization of CO dications is out of phase in a linear polarized laser field. The strong coupling between the channels is explained as the competition of recollision excitation and recollision ionization in a recollision process, leading to the opposite asymmetrical property. The experimental result provides insight into high degree controlling molecular multiple dissociative processes in the time scale of electronic motion.
ISSN:0031-9007
1079-7114
DOI:10.1103/PhysRevLett.106.073004