Communication: Switched wave packets with spectrally truncated chirped pulses

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  • Adam S. Chatterley
  • ,
  • Evangelos T. Karamatskos, DESY Photon Science, Universitat Hamburg
  • ,
  • Constant Schouder
  • Lars Christiansen
  • ,
  • Anders Vestergaard Jørgensen
  • ,
  • Terry Mullins, DESY Photon Science
  • ,
  • Jochen Küpper, DESY Photon Science, Universitat Hamburg
  • ,
  • Henrik Stapelfeldt

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 cos2 θ2D, rises along with the pulse intensity and reaches a maximum at the peak of the pulse. After truncation, cos2 θ2D 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.

Original languageEnglish
Article number221105
JournalJournal of Chemical Physics
Number of pages7
Publication statusPublished - 14 Jun 2018

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