Acta Physica Sinica

Control of vibrational excitation for the linear triatomic molecule by the Lie-algebra approach

Hairan Feng, Shiliang Ding, (1)济宁学院物理系，济宁 273155; (2)山东大学物理与微电子学院，济南 250100

Published Jan 1, 2008• 0 citations

Abstract

In this paper the control of vibrational excitation for the linear triatomic molecule has been studied. Selective vibrational excitation has been achieved successfully. Multiphoton excitation and the influence of the laser pulse shape on control have also been discussed.

DOI: 10.7498/aps.57.1626

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Acta Physica Sinica

Control of vibrational excitation for the linear triatomic molecule by the Lie-algebra approach

Hairan Feng, Shiliang Ding, (1)济宁学院物理系，济宁 273155; (2)山东大学物理与微电子学院，济南 250100

Published Jan 1, 2008• 0 citations

Publisher

Abstract

DOI: 10.7498/aps.57.1626

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{\mathrm{K}}_{2}

molecule are shown.

Laser Induced Dissociation Control of

H_2^+

and

H_3^{2+}

Laser induced dissociation control of the symmetric diatomic molecular ion

H_2^+

and the triatomic molecular ion

H_3^{2+}

is discussed. The simulation results demonstrate that a long-wavelength terahertz or mid-infrared laser pulse can be used to control the electrons of the dissociative states after the excitation of an ultrashort ultraviolet (UV) laser pulse. For

H_2^+,

there exists an effective time, which increases with increasing pulse duration of the UV laser pulse, for controlling the molecular dissociation. For the electrons of the

1sσ_g

state, they move along the polarization direction of the dissociation control electric field. In contrast, for the electrons of the

2pσ_u

state, they move in the opposite direction to that of the electric force. And for the triatomic molecule

H_3^{2+}

, the electron dissociation control can also be realized by changing the central wavelength of the exciting UV pulse.