期刊
JOURNAL OF CHEMICAL PHYSICS
卷 148, 期 22, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.5028359
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资金
- European Research Council-AdG [320459]
- European Union's Horizon 2020 research and innovation programme under the Marie Sklodowska-Curie Grant [674960]
- Deutsche Forschungsgemeinschaft (DFG) through the priority Program Quantum Dynamics in Tailored Intense Fields [1840, KU1527/3]
- Deutsche Forschungsgemeinschaft (DFG) through excellence cluster The Hamburg Center for Ultrafast Imaging-Structure, Dynamics and Control of Matter at the Atomic Scale (CUI) [EXC1074]
- Deutsche Forschungsgemeinschaft (DFG) through the Helmholtz Association Initiative and Networking Fund
A new technique for obtaining switched wave packets using spectrally truncated chirped laser pulses is demonstrated experimentally and numerically by one-dimensional alignment of both linear and asymmetric top molecules. Using a simple long-pass transmission filter, a pulse with a slow turn-on and a rapid turn-off is produced. The degree of alignment, characterized by < cos(2)theta(2D)>, rises along with the pulse intensity and reaches a maximum at the peak of the pulse. After truncation, < cos(2)theta(2D)> drops sharply but exhibits pronounced half and full revivals. The experimental alignment dynamics trace agrees very well with a numerically calculated trace based on the solution of the time-dependent Schrodinger equation. However, the extended periods of field-free alignment of asymmetric tops following pulse truncation reported previously are not reproduced in our work. Published by AIP Publishing.
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