期刊
PHYSICAL REVIEW A
卷 94, 期 1, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevA.94.013401
关键词
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资金
- MEXT [21000003]
- Photon Frontier Network Program of MEXT
- Advanced Leading Graduate Course for Photon Science (ALPS) of MEXT
- Grants-in-Aid for Scientific Research [21000003, 26247065] Funding Source: KAKEN
Laser-field-free three-dimensional orientation, corresponding to the complete control of spatial directions of asymmetric top molecules, is achieved with combined weak electrostatic and elliptically polarized laser fields with an 8-ns turnon and a 150-fs turnoff, which is shaped by a plasma shutter. Rotationally cold 3,4-dibromothiophene molecules are used as a sample, and their lower-lying rotational states are selected by a molecular deflector to increase the degrees of orientation. After the rapid turnoff of the pump pulse, higher degrees of orientation are maintained for 5-10 ps, which is long enough for various applications including electronic stereodynamics in molecules with femtosecond pulses.
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