Communication: Switched wave packets with spectrally truncated chirped pulses

Chatterley, Adam S.; Stapelfeldt, Henrik; Mullins, Terence; Jørgensen, Anders V.; Schouder, Constant; Karamatskos, Evangelos T.; Küpper, Jochen; Christiansen, Lars

doi:10.1063/1.5028359

Journal Article

PUBDB-2018-02514

Communication: Switched wave packets with spectrally truncated chirped pulses

Chatterley, A. S. ; Karamatskos, E. T. ; Schouder, C. ; Christiansen, L. ; Jørgensen, A. V. ; Mullins, T.CFEL*DESY* ; Küpper, J. (Corresponding author)CFEL*DESY* ; Stapelfeldt, H. (Corresponding author)Extern*

2018
AIP Melville, NY

The journal of chemical physics 148(22), 221105 (2018) [10.1063/1.5028359]

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Please use a persistent id in citations: doi:10.1063/1.5028359 doi:10.3204/PUBDB-2018-02514

Abstract: 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 $\langle \cos^{2}_{2D}\rangle$, rises along with the pulse intensity and reaches a maximum at the peak of the pulse. After truncation, $\langle \cos^{2}_{2D}\rangle$ 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 Schrödinger equation. However, the extended periods of field-free alignment of asymmetric tops following pulse truncation reported previously are not reproduced in our work.

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