Few-cycle laser pulses to obtain spatial separation of OHF- dissociation products

Nadia Elghobashi-Meinhardt*, Leticia González, Ingo Barth, Tamar Seideman

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

8 Scopus citations


In a two-part theoretical study, field-free orientation of OHF- is achieved by means of moderately intense half-cycle, infrared laser pulses. In the first step, a short linearly polarized pulse excites a superposition of rigid rotor rotational eigenstates via interaction with the permanent dipole moment of OHF-. After the field has been switched off, pronounced molecular orientation is observed for several picoseconds. In the second step, femtosecond few-cycle laser pulses are applied to the oriented system to steer vibrational dynamics, modeled by anharmonic vibrational wave functions calculated on a potential energy surface obtained with unrestricted fourth order Møller-Plesset ab initio calculations. The result is selective bond breaking of OHF, followed by the spatial separation of dissociation products in the space-fixed frame. Due to revivals in the rotational wavepacket, product yields can be enhanced over long times.

Original languageEnglish (US)
Article number024310
JournalJournal of Chemical Physics
Issue number2
StatePublished - 2009

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry


Dive into the research topics of 'Few-cycle laser pulses to obtain spatial separation of OHF- dissociation products'. Together they form a unique fingerprint.

Cite this