Switched Wave Packets with Spectrally Truncated Chirped Pulses
| Autor: | Chatterley, Adam Simon, Karamatskos, Evangelos Thomas, Schouder, Constant, Christiansen, Lars, Jørgesen, Anders, Mullins, Terence, Küpper, Jochen, Stapelfeldt, Henrik |
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| Rok vydání: | 2018 |
| Předmět: | |
| Zdroj: | J. Chem. Phys. 148 (2018) 221105 |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1063/1.5028359 |
| Popis: | 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 $\langle\cos^2\theta_\text{2D}\rangle$ rises along with the pulse intensity and reaches a maximum at the peak of the pulse. After truncation $\langle\cos^2\theta_\text{2D}\rangle$ drops sharply but exhibits pronounced half and full revivals. The experimental alignment dynamics trace agrees very well with a numerically calculated trace based on solution of the time-dependent Schr\"odinger equation. However, the extended periods of field-free alignment of asymmetric tops following pulse truncation reported previously is not reproduced in our work. Comment: 7 pages, 4 figures |
| Databáze: | arXiv |
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